20-5x=-5(x-4)

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Solution for 20-5x=-5(x-4) equation: 


Simplifying
20 + -5x = -5(x + -4)

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

Add '-20' to each side of the equation.
20 + -20 + -5x = 20 + -20 + -5x

Combine like terms: 20 + -20 = 0
0 + -5x = 20 + -20 + -5x
-5x = 20 + -20 + -5x

Combine like terms: 20 + -20 = 0
-5x = 0 + -5x
-5x = -5x

Add '5x' to each side of the equation.
-5x + 5x = -5x + 5x

Combine like terms: -5x + 5x = 0
0 = -5x + 5x

Combine like terms: -5x + 5x = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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