Question

7 (a+1)-3a=5+4 (2a-1)

Answer 1

Use the distributive property

7(a)+7(1)-3a = 5+4(2a)+4(-1)

Multiply and then add to get your final answer.

Answer 2

`7(a+1)-3a=5+4(2a-1) \\ \\ 7a+7-3a=5+8a-4 \\ \\ 4a+7=8a+1 \\ \\ 4a-8a=1-7 \\ \\ -4a=-6 \\ \\ \boxed{a=(-6)/(-4)= (3)/(2)}`