20=-3x-2+8x+7

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Solution for 20=-3x-2+8x+7 equation:


Simplifying
20 = -3x + -2 + 8x + 7

Reorder the terms:
20 = -2 + 7 + -3x + 8x

Combine like terms: -2 + 7 = 5
20 = 5 + -3x + 8x

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

Solving
20 = 5 + 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 = 5 + 5x + -5x

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

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

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

Combine like terms: 5 + -20 = -15
-5x = -15

Divide each side by '-5'.
x = 3

Simplifying
x = 3

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