-9b-12=8-4b

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Solution for -9b-12=8-4b equation:


Simplifying
-9b + -12 = 8 + -4b

Reorder the terms:
-12 + -9b = 8 + -4b

Solving
-12 + -9b = 8 + -4b

Solving for variable 'b'.

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

Add '4b' to each side of the equation.
-12 + -9b + 4b = 8 + -4b + 4b

Combine like terms: -9b + 4b = -5b
-12 + -5b = 8 + -4b + 4b

Combine like terms: -4b + 4b = 0
-12 + -5b = 8 + 0
-12 + -5b = 8

Add '12' to each side of the equation.
-12 + 12 + -5b = 8 + 12

Combine like terms: -12 + 12 = 0
0 + -5b = 8 + 12
-5b = 8 + 12

Combine like terms: 8 + 12 = 20
-5b = 20

Divide each side by '-5'.
b = -4

Simplifying
b = -4

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