b-13=-1

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Solution for b-13=-1 equation: 


Simplifying
b + -13 = -1

Reorder the terms:
-13 + b = -1

Solving
-13 + b = -1

Solving for variable 'b'.

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

Add '13' to each side of the equation.
-13 + 13 + b = -1 + 13

Combine like terms: -13 + 13 = 0
0 + b = -1 + 13
b = -1 + 13

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

Simplifying
b = 12

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