21-x=1-x

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Solution for 21-x=1-x equation: 


Simplifying
21 + -1x = 1 + -1x

Add 'x' to each side of the equation.
21 + -1x + x = 1 + -1x + x

Combine like terms: -1x + x = 0
21 + 0 = 1 + -1x + x
21 = 1 + -1x + x

Combine like terms: -1x + x = 0
21 = 1 + 0
21 = 1

Solving
21 = 1

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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