12-20=-4x

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Solution for 12-20=-4x equation:


Simplifying
12 + -20 = -4x

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

Solving
-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.
-8 + 4x = -4x + 4x

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

Add '8' to each side of the equation.
-8 + 8 + 4x = 0 + 8

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

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

Divide each side by '4'.
x = 2

Simplifying
x = 2

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