15=120+3b

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Solution for 15=120+3b equation:


Simplifying
15 = 120 + 3b

Solving
15 = 120 + 3b

Solving for variable 'b'.

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

Add '-3b' to each side of the equation.
15 + -3b = 120 + 3b + -3b

Combine like terms: 3b + -3b = 0
15 + -3b = 120 + 0
15 + -3b = 120

Add '-15' to each side of the equation.
15 + -15 + -3b = 120 + -15

Combine like terms: 15 + -15 = 0
0 + -3b = 120 + -15
-3b = 120 + -15

Combine like terms: 120 + -15 = 105
-3b = 105

Divide each side by '-3'.
b = -35

Simplifying
b = -35

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