90-x=10-x

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Solution for 90-x=10-x equation: 


Simplifying
90 + -1x = 10 + -1x

Add 'x' to each side of the equation.
90 + -1x + x = 10 + -1x + x

Combine like terms: -1x + x = 0
90 + 0 = 10 + -1x + x
90 = 10 + -1x + x

Combine like terms: -1x + x = 0
90 = 10 + 0
90 = 10

Solving
90 = 10

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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