-3(b+1)=12

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Solution for -3(b+1)=12 equation: 


Simplifying
-3(b + 1) = 12

Reorder the terms:
-3(1 + b) = 12
(1 * -3 + b * -3) = 12
(-3 + -3b) = 12

Solving
-3 + -3b = 12

Solving for variable 'b'.

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

Add '3' to each side of the equation.
-3 + 3 + -3b = 12 + 3

Combine like terms: -3 + 3 = 0
0 + -3b = 12 + 3
-3b = 12 + 3

Combine like terms: 12 + 3 = 15
-3b = 15

Divide each side by '-3'.
b = -5

Simplifying
b = -5

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