-8(7-8b)=-440

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Solution for -8(7-8b)=-440 equation: 


Simplifying
-8(7 + -8b) = -440
(7 * -8 + -8b * -8) = -440
(-56 + 64b) = -440

Solving
-56 + 64b = -440

Solving for variable 'b'.

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

Add '56' to each side of the equation.
-56 + 56 + 64b = -440 + 56

Combine like terms: -56 + 56 = 0
0 + 64b = -440 + 56
64b = -440 + 56

Combine like terms: -440 + 56 = -384
64b = -384

Divide each side by '64'.
b = -6

Simplifying
b = -6

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