Find k if

      

Find k if
$\frac{4x\;-\;1}{2}$ = $\frac{14x\;+\;k}{7}$

  

Answers

---

$\frac{4x\;-\;1}{2}$ = $\frac{14x\;+\;k}{7}$

Cross multiply both sides

28x - 7 = 28x + 2k

-7 = 2k;

k = -3.5

---

johnmulu answered the question on June 7, 2017 at 13:23

Next: Given that 6 - 3x = $\frac{1}{2}(x-2)$, find the value of x.
Previous: What are the characteristics of a river in its middle stage?

View More Mathematics Questions and Answers | Return to Questions Index

Exams With Marking Schemes

• Grade 1
• Grade 2
• Grade 3
• Grade 4
• Grade 5
• Grade 6
• Grade 7
• Grade 8
• Grade 9
• PP1
• PP2
• Playgroup
• Form 1
• Form 2
• Form 3
• Form 4

Related Questions

---

• Given that 6 - 3x = $\frac{1}{2}(x-2)$, find the value of x. (Solved)
  

  Given that 6 - 3x = $\frac{1}{2}(x-2)$, find the value of x.
  

  Date posted: June 7, 2017.  Answers (1)

• Solve the equation(Solved)
  

  Solve the equation
  $\frac{3x}{2}$ - $\frac{x\;-\;1}{3}$ = $\frac{1}{2}(3x\;-\;2)$

  Date posted: June 7, 2017.  Answers (1)

• Solve the equation (Solved)
  

  Solve the equation
  $\frac{1}{3}(x\;+\;4)$ - $\frac{1}{2}(2x$ - 4) = 2

  Date posted: June 7, 2017.  Answers (1)

• Solve the equation(Solved)
  

  Solve the equation
  $\frac{x\;+\;1}{3} \;- \frac{x\;-\;2}{4} \;=\frac{x}{6}$

  Date posted: June 7, 2017.  Answers (1)

• Solve the equation(Solved)
  

  Solve the equation
  $\frac{1}{5}(x\;+\;6)\;=\;\frac{2}{3}(2\;-\;5x)\;+ \frac{3}{4}$

  Date posted: June 7, 2017.  Answers (1)

• Determine x where: (Solved)
  

  Determine x where:
  $\frac{3x}{5}\;- \frac{x\;-\;2}{3}$ = 2

  Date posted: June 7, 2017.  Answers (1)

• Solve for x in:(Solved)
  

  Solve for x in:
  $x\;+\;2 = \frac{5x\;-\;1}{4}-\frac{1}{2}(x\;+\;1)$

  Date posted: June 7, 2017.  Answers (1)

• Three years ago, a father was three times as old as his son. In three years time, the sum of their ages will be 76 years. Determine their present ages.(Solved)
  

  Three years ago, a father was three times as old as his son. In three years time, the sum of their ages will be 76 years. Determine their present ages.

  Date posted: March 10, 2017.  Answers (1)

• Solve for x in: $\frac{x-2}{3}$ - $\frac{3-x}{4}$ = $\frac{x-2}{2}$ (Solved)
  

  Solve for x in:
  $\frac{x-2}{3}$ - $\frac{3-x}{4}$ = $\frac{x-2}{2}$
  

  Date posted: March 10, 2017.  Answers (1)

• A motorist took 2$\frac{3}{4}$ hours to travel from town A to town B. If he started the journey at 10.30 a.m, determine the time the journey ended in(Solved)
  

  A motorist took 2$\frac{3}{4}$ hours to travel from town A to town B. If he started the journey at 10.30 a.m, determine the time the journey ended in
  i) 24 hour clock system.
  ii) 12 hour clock system
  

  Date posted: March 10, 2017.  Answers (1)

• A mathematics speed test started at 8.40 a.m and ended at 9.20 a.m. How long was the speed test(Solved)
  

  A mathematics speed test started at 8.40 a.m and ended at 9.20 a.m. How long was the speed test

  Date posted: March 10, 2017.  Answers (1)

• A metal P is an alloy of two metals Q and R. Metal Q has a mass of 70 g and a density of 16 g/cm³. Metal R has a mass of 19 g and a density of 4 g/cm³. Find the density of the alloy(Solved)
  

  A metal P is an alloy of two metals Q and R. Metal Q has a mass of 70 g and a density of 16 g/cm³. Metal R has a mass of 19 g and a density of 4 g/cm³. Find the density of the alloy.

  Date posted: March 10, 2017.  Answers (1)

• A liquid has a mass of 6 200 kg and a density of 760 kg/m³. Find its volume.(Solved)
  

  A liquid has a mass of 6 200 kg and a density of 760 kg/m³. Find its volume.

  Date posted: March 10, 2017.  Answers (1)

• Cheserem, Otieno and Kariuki divided 500 eggs among themselves in the ratio 14:5:6 respectively. Later, Cheserem gave 20 eggs to Otieno and 20 eggs to Kariuki. Find the ratio of eggs that they finally got(Solved)
  

  Cheserem, Otieno and Kariuki divided 500 eggs among themselves in the ratio 14:5:6 respectively. Later, Cheserem gave 20 eggs to Otieno and 20 eggs to Kariuki. Find the ratio of eggs that they finally got

  Date posted: March 10, 2017.  Answers (1)

• Simplify: $\frac{(6a + b)(a+ b) - 7b(a + b)}{2a^2 - 2b^2}$(Solved)
  

  Simplify:
  $\frac{(6a + b)(a+ b) - 7b(a + b)}{2a^2 - 2b^2}$

  Date posted: March 9, 2017.  Answers (1)

• Simplify: (4x + 3y + 3z) - (z - 4y + 2x)(Solved)
  

  Simplify:
  a) (4x + 3y + 3z) - (z - 4y + 2x)
  b) $\frac{3(x^2 - 9)}{x + 3}$

  Date posted: March 9, 2017.  Answers (1)

• Use reciprocal and square tables to evaluate to 4 significant figures the expression $\frac{1}{24.56}$ + 4.362²(Solved)
  

  Use reciprocal and square tables to evaluate to 4 significant figures the expression
  $\frac{1}{24.56}$ + 4.362²

  Date posted: March 9, 2017.  Answers (1)

• Kamau spend $\frac{3}{5}$ of his money on buying food and $\frac{1}{2}$ of what was left on rent. After that, he finds that he has sh 1 400 left in his pocket. Determine the amount spent on buying food.(Solved)
  

  Kamau spend $\frac{3}{5}$ of his money on buying food and $\frac{1}{2}$ of what was left on rent. After that, he finds that he has sh 1 400 left in his pocket. Determine the amount spent on buying food.

  Date posted: March 9, 2017.  Answers (1)

• Evaluate $\frac{-45\div (-15\times 4 - (-38))}{-50\times 50\div 5\times (-5)}$(Solved)
  

  Evaluate $\frac{-45\div (-15\times 4 - (-38))}{-50\times 50\div 5\times (-5)}$

  Date posted: March 9, 2017.  Answers (1)

• Express the numbers 20, 40 and 80 each as a product of its prime factors. Hence find the L.C.M of the numbers in factor form(Solved)
  

  Express the numbers 20, 40 and 80 each as a product of its prime factors. Hence find the L.C.M of the numbers in factor form

  Date posted: March 9, 2017.  Answers (1)