10b-1=129

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Solution for 10b-1=129 equation: 


Simplifying
10b + -1 = 129

Reorder the terms:
-1 + 10b = 129

Solving
-1 + 10b = 129

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 + 10b = 129 + 1

Combine like terms: -1 + 1 = 0
0 + 10b = 129 + 1
10b = 129 + 1

Combine like terms: 129 + 1 = 130
10b = 130

Divide each side by '10'.
b = 13

Simplifying
b = 13

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