b+12=-21

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Solution for b+12=-21 equation: 


Simplifying
b + 12 = -21

Reorder the terms:
12 + b = -21

Solving
12 + b = -21

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 + b = -21 + -12

Combine like terms: 12 + -12 = 0
0 + b = -21 + -12
b = -21 + -12

Combine like terms: -21 + -12 = -33
b = -33

Simplifying
b = -33

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