Question

Expand the brackets and simplify
a. 5(x+4) + 2(x+3)

b. 3(y+6) + 4(y-5)​

Answer 1

a. 7x+26

b.7y-2

Explanation:

for question a

1.Do 5 multiplied by x (5x) and 5 multiplied by 4 (20) and do the same with the other brackets

2. simplify the expression (collect the like terms)

5x+20+2x+6=6x+26

3.calculate the sum

DO THE SAME FOR QUESTION b

Answer 2

Explanation:

a. 5(x+4) + 2(x+3) = 5*x + 5*4 + 2*x + 2*3

= 5x + 20 + 2x + 6

= 5x + 2x + 20 +6 {bring like terms together}

= 7x + 26

b. 3(y+6) + 4(y-5)​ = 3*y + 3*6 + 4*y - 4*5

= 3y + 18 + 4y - 20

= 3y + 4y + 18 - 20 {bring like terms together}

= 7y - 2