12=-3b+b

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Solution for 12=-3b+b equation:


Simplifying
12 = -3b + b

Combine like terms: -3b + b = -2b
12 = -2b

Solving
12 = -2b

Solving for variable 'b'.

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

Add '2b' to each side of the equation.
12 + 2b = -2b + 2b

Combine like terms: -2b + 2b = 0
12 + 2b = 0

Add '-12' to each side of the equation.
12 + -12 + 2b = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 2b = 0 + -12
2b = 0 + -12

Combine like terms: 0 + -12 = -12
2b = -12

Divide each side by '2'.
b = -6

Simplifying
b = -6

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