20=-2(2x-4)

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Solution for 20=-2(2x-4) equation:


Simplifying
20 = -2(2x + -4)

Reorder the terms:
20 = -2(-4 + 2x)
20 = (-4 * -2 + 2x * -2)
20 = (8 + -4x)

Solving
20 = 8 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
20 + 4x = 8 + -4x + 4x

Combine like terms: -4x + 4x = 0
20 + 4x = 8 + 0
20 + 4x = 8

Add '-20' to each side of the equation.
20 + -20 + 4x = 8 + -20

Combine like terms: 20 + -20 = 0
0 + 4x = 8 + -20
4x = 8 + -20

Combine like terms: 8 + -20 = -12
4x = -12

Divide each side by '4'.
x = -3

Simplifying
x = -3

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