x-20+x-20=x-20

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


Simplifying
x + -20 + x + -20 = x + -20

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

Combine like terms: -20 + -20 = -40
-40 + x + x = x + -20

Combine like terms: x + x = 2x
-40 + 2x = x + -20

Reorder the terms:
-40 + 2x = -20 + x

Solving
-40 + 2x = -20 + 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.
-40 + 2x + -1x = -20 + x + -1x

Combine like terms: 2x + -1x = 1x
-40 + 1x = -20 + x + -1x

Combine like terms: x + -1x = 0
-40 + 1x = -20 + 0
-40 + 1x = -20

Add '40' to each side of the equation.
-40 + 40 + 1x = -20 + 40

Combine like terms: -40 + 40 = 0
0 + 1x = -20 + 40
1x = -20 + 40

Combine like terms: -20 + 40 = 20
1x = 20

Divide each side by '1'.
x = 20

Simplifying
x = 20

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