85-3b+2b+42=90

Solution for 85-3b+2b+42=90 equation:

Simplifying
85 + -3b + 2b + 42 = 90

Reorder the terms:
85 + 42 + -3b + 2b = 90

Combine like terms: 85 + 42 = 127
127 + -3b + 2b = 90

Combine like terms: -3b + 2b = -1b
127 + -1b = 90

Solving
127 + -1b = 90

Solving for variable 'b'.

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

Add '-127' to each side of the equation.
127 + -127 + -1b = 90 + -127

Combine like terms: 127 + -127 = 0
0 + -1b = 90 + -127
-1b = 90 + -127

Combine like terms: 90 + -127 = -37
-1b = -37

Divide each side by '-1'.
b = 37

Simplifying
b = 37