-3b-12=3

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Solution for -3b-12=3 equation: 


Simplifying
-3b + -12 = 3

Reorder the terms:
-12 + -3b = 3

Solving
-12 + -3b = 3

Solving for variable 'b'.

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

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

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

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

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

Simplifying
b = -5

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