-2(-7b+8)=-128

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Solution for -2(-7b+8)=-128 equation:


Simplifying
-2(-7b + 8) = -128

Reorder the terms:
-2(8 + -7b) = -128
(8 * -2 + -7b * -2) = -128
(-16 + 14b) = -128

Solving
-16 + 14b = -128

Solving for variable 'b'.

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

Add '16' to each side of the equation.
-16 + 16 + 14b = -128 + 16

Combine like terms: -16 + 16 = 0
0 + 14b = -128 + 16
14b = -128 + 16

Combine like terms: -128 + 16 = -112
14b = -112

Divide each side by '14'.
b = -8

Simplifying
b = -8

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