Question

What is the value of b in the equation 3b + 2(b − 1) = 8?
2
5
8
10


Would this be 2?

Answer 1

The given expression to simplify is

$3b + 2(b-1) = 8$

open the bracket we get

$3b+2b-2=8\\ \\ 5b-2=8\\ \\ \text{Add 2 on both the sides we get}\\ \\ 5b-2+2=8+2\\ \\ 5b=10\\ \\ \text{Divide on both the sides by 5 we get}\\ \\ b=2\\ \\ \text{Hence the value of }b=5$