Verified Answer :

"Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-2b' to each side of the equation.
4 + b + -2b = -5 + 2b + -2b

Combine like terms: b + -2b = -1b
4 + -1b = -5 + 2b + -2b

Combine like terms: 2b + -2b = 0
4 + -1b = -5 + 0
4 + -1b = -5

Add '-4' to each side of the equation.
4 + -4 + -1b = -5 + -4

Combine like terms: 4 + -4 = 0
0 + -1b = -5 + -4
-1b = -5 + -4

Combine like terms: -5 + -4 = -9
-1b = -9

Divide each side by '-1'.
b = 9

Simplifying
b = 9"- geteasysolution.com