b+-8=12

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Solution for b+-8=12 equation: 


Simplifying
b + -8 = 12

Reorder the terms:
-8 + b = 12

Solving
-8 + b = 12

Solving for variable 'b'.

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

Add '8' to each side of the equation.
-8 + 8 + b = 12 + 8

Combine like terms: -8 + 8 = 0
0 + b = 12 + 8
b = 12 + 8

Combine like terms: 12 + 8 = 20
b = 20

Simplifying
b = 20

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