b+8-9=12

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Solution for b+8-9=12 equation:


Simplifying
b + 8 + -9 = 12

Reorder the terms:
8 + -9 + b = 12

Combine like terms: 8 + -9 = -1
-1 + b = 12

Solving
-1 + b = 12

Solving for variable 'b'.

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

Add '1' to each side of the equation.
-1 + 1 + b = 12 + 1

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

Combine like terms: 12 + 1 = 13
b = 13

Simplifying
b = 13

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