2(b-9)=12

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Solution for 2(b-9)=12 equation: 


Simplifying
2(b + -9) = 12

Reorder the terms:
2(-9 + b) = 12
(-9 * 2 + b * 2) = 12
(-18 + 2b) = 12

Solving
-18 + 2b = 12

Solving for variable 'b'.

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

Add '18' to each side of the equation.
-18 + 18 + 2b = 12 + 18

Combine like terms: -18 + 18 = 0
0 + 2b = 12 + 18
2b = 12 + 18

Combine like terms: 12 + 18 = 30
2b = 30

Divide each side by '2'.
b = 15

Simplifying
b = 15

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