b-9+b=39

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Solution for b-9+b=39 equation: 


Simplifying
b + -9 + b = 39

Reorder the terms:
-9 + b + b = 39

Combine like terms: b + b = 2b
-9 + 2b = 39

Solving
-9 + 2b = 39

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 + 2b = 39 + 9

Combine like terms: -9 + 9 = 0
0 + 2b = 39 + 9
2b = 39 + 9

Combine like terms: 39 + 9 = 48
2b = 48

Divide each side by '2'.
b = 24

Simplifying
b = 24

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