x-20=x-40

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Solution for x-20=x-40 equation: 


Simplifying
x + -20 = x + -40

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

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

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

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

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

Solving
-20 = -40

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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