-3-b=12

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Solution for -3-b=12 equation: 


Simplifying
-3 + -1b = 12

Solving
-3 + -1b = 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 + -1b = 12 + 3

Combine like terms: -3 + 3 = 0
0 + -1b = 12 + 3
-1b = 12 + 3

Combine like terms: 12 + 3 = 15
-1b = 15

Divide each side by '-1'.
b = -15

Simplifying
b = -15

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