13b-72=84

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Solution for 13b-72=84 equation: 


Simplifying
13b + -72 = 84

Reorder the terms:
-72 + 13b = 84

Solving
-72 + 13b = 84

Solving for variable 'b'.

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

Add '72' to each side of the equation.
-72 + 72 + 13b = 84 + 72

Combine like terms: -72 + 72 = 0
0 + 13b = 84 + 72
13b = 84 + 72

Combine like terms: 84 + 72 = 156
13b = 156

Divide each side by '13'.
b = 12

Simplifying
b = 12

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