84=-4(-4x-5)

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Solution for 84=-4(-4x-5) equation:


Simplifying
84 = -4(-4x + -5)

Reorder the terms:
84 = -4(-5 + -4x)
84 = (-5 * -4 + -4x * -4)
84 = (20 + 16x)

Solving
84 = 20 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
84 + -16x = 20 + 16x + -16x

Combine like terms: 16x + -16x = 0
84 + -16x = 20 + 0
84 + -16x = 20

Add '-84' to each side of the equation.
84 + -84 + -16x = 20 + -84

Combine like terms: 84 + -84 = 0
0 + -16x = 20 + -84
-16x = 20 + -84

Combine like terms: 20 + -84 = -64
-16x = -64

Divide each side by '-16'.
x = 4

Simplifying
x = 4

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