120=x-(x-30)

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Solution for 120=x-(x-30) equation: 


Simplifying
120 = x + -1(x + -30)

Reorder the terms:
120 = x + -1(-30 + x)
120 = x + (-30 * -1 + x * -1)
120 = x + (30 + -1x)

Reorder the terms:
120 = 30 + x + -1x

Combine like terms: x + -1x = 0
120 = 30 + 0
120 = 30

Solving
120 = 30

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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