12-8b=b-15

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Solution for 12-8b=b-15 equation:


Simplifying
12 + -8b = b + -15

Reorder the terms:
12 + -8b = -15 + b

Solving
12 + -8b = -15 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
12 + -8b + -1b = -15 + b + -1b

Combine like terms: -8b + -1b = -9b
12 + -9b = -15 + b + -1b

Combine like terms: b + -1b = 0
12 + -9b = -15 + 0
12 + -9b = -15

Add '-12' to each side of the equation.
12 + -12 + -9b = -15 + -12

Combine like terms: 12 + -12 = 0
0 + -9b = -15 + -12
-9b = -15 + -12

Combine like terms: -15 + -12 = -27
-9b = -27

Divide each side by '-9'.
b = 3

Simplifying
b = 3

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