4x-4(-4x-5)=-80

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


Simplifying
4x + -4(-4x + -5) = -80

Reorder the terms:
4x + -4(-5 + -4x) = -80
4x + (-5 * -4 + -4x * -4) = -80
4x + (20 + 16x) = -80

Reorder the terms:
20 + 4x + 16x = -80

Combine like terms: 4x + 16x = 20x
20 + 20x = -80

Solving
20 + 20x = -80

Solving for variable 'x'.

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

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

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

Combine like terms: -80 + -20 = -100
20x = -100

Divide each side by '20'.
x = -5

Simplifying
x = -5

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