8b + 23 = -4.2

2 answers

You need to solve for B.
8b= -4.2 -23

What would you have to do next in order to get B by itself?
23 + -23 + 8b = 4.2 + -23

Combine like terms: 23 + -23 = 0
0 + 8b = 4.2 + -23
8b = 4.2 + -23

Combine like terms: 4.2 + -23 = -18.8
8b = -18.8

Divide each side by '8'.
b = -2.35

Simplifying
b = -2.35