20-3x-x=x+15

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Solution for 20-3x-x=x+15 equation:


Simplifying
20 + -3x + -1x = x + 15

Combine like terms: -3x + -1x = -4x
20 + -4x = x + 15

Reorder the terms:
20 + -4x = 15 + x

Solving
20 + -4x = 15 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
20 + -4x + -1x = 15 + x + -1x

Combine like terms: -4x + -1x = -5x
20 + -5x = 15 + x + -1x

Combine like terms: x + -1x = 0
20 + -5x = 15 + 0
20 + -5x = 15

Add '-20' to each side of the equation.
20 + -20 + -5x = 15 + -20

Combine like terms: 20 + -20 = 0
0 + -5x = 15 + -20
-5x = 15 + -20

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

Divide each side by '-5'.
x = 1

Simplifying
x = 1

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