-4(-5-4b)-8b=84

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Solution for -4(-5-4b)-8b=84 equation: 


Simplifying
-4(-5 + -4b) + -8b = 84
(-5 * -4 + -4b * -4) + -8b = 84
(20 + 16b) + -8b = 84

Combine like terms: 16b + -8b = 8b
20 + 8b = 84

Solving
20 + 8b = 84

Solving for variable 'b'.

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

Add '-20' to each side of the equation.
20 + -20 + 8b = 84 + -20

Combine like terms: 20 + -20 = 0
0 + 8b = 84 + -20
8b = 84 + -20

Combine like terms: 84 + -20 = 64
8b = 64

Divide each side by '8'.
b = 8

Simplifying
b = 8

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