2b+(b-9)=108

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Solution for 2b+(b-9)=108 equation:


Simplifying
2b + (b + -9) = 108

Reorder the terms:
2b + (-9 + b) = 108

Remove parenthesis around (-9 + b)
2b + -9 + b = 108

Reorder the terms:
-9 + 2b + b = 108

Combine like terms: 2b + b = 3b
-9 + 3b = 108

Solving
-9 + 3b = 108

Solving for variable 'b'.

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

Add '9' to each side of the equation.
-9 + 9 + 3b = 108 + 9

Combine like terms: -9 + 9 = 0
0 + 3b = 108 + 9
3b = 108 + 9

Combine like terms: 108 + 9 = 117
3b = 117

Divide each side by '3'.
b = 39

Simplifying
b = 39

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