-4b+15=5b+123

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Solution for -4b+15=5b+123 equation:


Simplifying
-4b + 15 = 5b + 123

Reorder the terms:
15 + -4b = 5b + 123

Reorder the terms:
15 + -4b = 123 + 5b

Solving
15 + -4b = 123 + 5b

Solving for variable 'b'.

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

Add '-5b' to each side of the equation.
15 + -4b + -5b = 123 + 5b + -5b

Combine like terms: -4b + -5b = -9b
15 + -9b = 123 + 5b + -5b

Combine like terms: 5b + -5b = 0
15 + -9b = 123 + 0
15 + -9b = 123

Add '-15' to each side of the equation.
15 + -15 + -9b = 123 + -15

Combine like terms: 15 + -15 = 0
0 + -9b = 123 + -15
-9b = 123 + -15

Combine like terms: 123 + -15 = 108
-9b = 108

Divide each side by '-9'.
b = -12

Simplifying
b = -12

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