2(b-1)=9

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Solution for 2(b-1)=9 equation: 


Simplifying
2(b + -1) = 9

Reorder the terms:
2(-1 + b) = 9
(-1 * 2 + b * 2) = 9
(-2 + 2b) = 9

Solving
-2 + 2b = 9

Solving for variable 'b'.

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

Add '2' to each side of the equation.
-2 + 2 + 2b = 9 + 2

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

Combine like terms: 9 + 2 = 11
2b = 11

Divide each side by '2'.
b = 5.5

Simplifying
b = 5.5

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