-5(-4-4d)=80

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Solution for -5(-4-4d)=80 equation: 


Simplifying
-5(-4 + -4d) = 80
(-4 * -5 + -4d * -5) = 80
(20 + 20d) = 80

Solving
20 + 20d = 80

Solving for variable 'd'.

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

Add '-20' to each side of the equation.
20 + -20 + 20d = 80 + -20

Combine like terms: 20 + -20 = 0
0 + 20d = 80 + -20
20d = 80 + -20

Combine like terms: 80 + -20 = 60
20d = 60

Divide each side by '20'.
d = 3

Simplifying
d = 3

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