-2(b-1)=4

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Solution for -2(b-1)=4 equation: 


Simplifying
-2(b + -1) = 4

Reorder the terms:
-2(-1 + b) = 4
(-1 * -2 + b * -2) = 4
(2 + -2b) = 4

Solving
2 + -2b = 4

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 = 4 + -2

Combine like terms: 2 + -2 = 0
0 + -2b = 4 + -2
-2b = 4 + -2

Combine like terms: 4 + -2 = 2
-2b = 2

Divide each side by '-2'.
b = -1

Simplifying
b = -1

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