20=-3x+8x

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Solution for 20=-3x+8x equation: 


Simplifying
20 = -3x + 8x

Combine like terms: -3x + 8x = 5x
20 = 5x

Solving
20 = 5x

Solving for variable 'x'.

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

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

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

Add '-20' to each side of the equation.
20 + -20 + -5x = 0 + -20

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

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

Divide each side by '-5'.
x = 4

Simplifying
x = 4

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