a. (3r -4)/5 + (2-r)/3 =3(3r-4) +5(2-r)
= (9r -12 +10 -5r)/15
= (4r-2)/15
b. 2/a^2 -2/c^2d =2(c^2d -2(a^2)/a^2c^2d
= 2c^2d -2a^2/a^2c^2d
=2(c^2d –a^2)/a^c^2d
joseph rimiru answered the question on October 24, 2017 at 19:32
- Express the following as a single fraction
a. (p+q)/4 +(p-2q)/5
b. ½ + (3a +b)/(3a +3b)
(Solved)
Express the following as a single fraction
a. (p+q)/4 +(p-2q)/5
b. ½ + (3a +b)/(3a +3b)
Date posted: October 24, 2017. Answers (1)
- Express the follow as a single fraction.
a. m/4 +(x-1)/2 + 5x/6
b. (4a^2 +ab)/4(a +b) + 2a/3
(Solved)
Express the follow as a single fraction.
a. m/4 +(x-1)/2 + 5x/6
b. (4a^2 +ab)/4(a +b) + 2a/3
Date posted: October 24, 2017. Answers (1)
- Express each of the following as a single fraction in its lowest form
a. (X-1)/2 + (x+1)/3
b. (3a^2 +ab)/ab...(Solved)
Express each of the following as a single fraction in its lowest form
a. (X-1)/2 + (x+1)/3
b. (3a^2 +ab)/ab –(3a^2-ab)/5ab
Date posted: October 24, 2017. Answers (1)
- James has 2x books while Paul has five more books than him. Tina has 3t books and mary has two books less than Tina. How...(Solved)
James has 2x books while Paul has five more books than him. Tina has 3t books and mary has two books less than Tina. How many books do they have altogether?
Date posted: October 22, 2017. Answers (1)
- A vehicle travels at a speed of (x +10)km/h. what distance does it cover in (3y-5)hours?(Solved)
A vehicle travels at a speed of (x +10)km/h. what distance does it cover in (3y-5)hours
Date posted: October 22, 2017. Answers (1)
- A square lawn of side x cm is surrounded by a path of width 2m. write an expression for the area of the path.(Solved)
A square lawn of side x cm is surrounded by a path of width 2m. write an expression for the area of the path.
Date posted: October 22, 2017. Answers (1)
- A rectangular piece of cloth is (x+6)cm by (x-2)cm. A strip 3cm wide is cut off all around it. Write an expression for the area...(Solved)
A rectangular piece of cloth is (x+6)cm by (x-2)cm. A strip 3cm wide is cut off all around it. Write an expression for the area of the strip.
Date posted: October 22, 2017. Answers (1)
- Sammy has sh. X . buys a book for y and a pen for sh. Z. how much is he left with? (Solved)
Sammy has sh. X . buys a book for y and a pen for sh. Z. how much is he left with?
Date posted: October 22, 2017. Answers (1)
- An empty basket mass is w kg. Forty eggs each of mass x grams are placed in the basket. Find the mass of y ...(Solved)
An empty basket mass is w kg. Forty eggs each of mass x grams are placed in the basket. Find the mass of y such basket.
Date posted: October 22, 2017. Answers (1)
- Express each of the following using symbols and brackets
a. Multiply the difference of x and y by z
b. Multiply (x+3) by (4-x)
c. Subtract 2a+b from 2-b
(Solved)
Express each of the following using symbols and brackets
a. Multiply the difference of x and y by z
b. Multiply (x+3) by (4-x)
c. Subtract 2a+b from 2-b
Date posted: October 22, 2017. Answers (1)
- Factorise each of the following
a. 4x +3y +4z +3y
b. 8a +6b +3c -6a
c. Xy^2 –x^2y
(Solved)
Factorise each of the following
a. 4x +3y +4z +3y
b. 8a +6b +3c -6a
c. Xy^2 –x^2y
Date posted: October 22, 2017. Answers (1)
- Remove the bracket and simplify
a. (4-y)-2(2x-3y+2)
b. (5-y)-3(y-4x-2)
(Solved)
Remove the bracket and simplify
a. (4-y)-2(2x-3y+2)
b. (5-y)-3(y-4x-2)
Date posted: October 22, 2017. Answers (1)
- Remove the bracket and simplify
a. 6(r +s) + 8(r +s)
b. 4(2x +5) -3(6x-7)
(Solved)
Remove the bracket and simplify
a. 6(r +s) + 8(r +s)
b. 4(2x +5) -3(6x-7)
Date posted: October 22, 2017. Answers (1)
- In each of the following, pick the term which is not like the others
a. 4x, 6x, 8x, 3x^2, 12x
b. n^5, 6m^5, 8m^5, m^5,m^2, 4m^5
c. 2ab, ab, -ab, a^2b,...(Solved)
In each of the following, pick the term which is not like the others
a. 4x, 6x, 8x, 3x^2, 12x
b. n^5, 6m^5, 8m^5, m^5,m^2, 4m^5
c. 2ab, ab, -ab, a^2b, -3/5ab
Date posted: October 22, 2017. Answers (1)
- Simplify
a. 4a +6b +8a – 2b
b. -10m +2k -3m -5k
(Solved)
Simplify
a. 4a +6b +8a – 2b
b. -10m +2k -3m -5k
Date posted: October 22, 2017. Answers (1)
- Simplify (1/2)x + (1/3)y +(1/5)x(Solved)
Simplify (1/2)x + (1/3)y +(1/5)x
Date posted: October 22, 2017. Answers (1)
- Simplify 3a +4b-a+c+3b(Solved)
Simplify 3a +4b-a+c+3b
Date posted: October 22, 2017. Answers (1)
- Sam spend half of his monthly earning on food and one sixth on water and electricity. Write down an expression for the remainder of his...(Solved)
Sam spend half of his monthly earning on food and one sixth on water and electricity. Write down an expression for the remainder of his earning s.
Date posted: October 22, 2017. Answers (1)
- David is seven years older than his brother ken. Find the expression for
a. The sum of their ages
b. The sum of their ages in ten years to...(Solved)
David is seven years older than his brother ken. Find the expression for
a. The sum of their ages
b. The sum of their ages in ten years to come.
c. The product of their ages four years ago
Date posted: October 22, 2017. Answers (1)
- A certain number is add to 2/5 of itself. If the sum is doubled, write down the final statement(Solved)
A certain number is add to 2/5 of itself. If the sum is doubled, write down the final statement
Date posted: October 21, 2017. Answers (1)