90-x=x+60

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Solution for 90-x=x+60 equation:


Simplifying
90 + -1x = x + 60

Reorder the terms:
90 + -1x = 60 + x

Solving
90 + -1x = 60 + 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.
90 + -1x + -1x = 60 + x + -1x

Combine like terms: -1x + -1x = -2x
90 + -2x = 60 + x + -1x

Combine like terms: x + -1x = 0
90 + -2x = 60 + 0
90 + -2x = 60

Add '-90' to each side of the equation.
90 + -90 + -2x = 60 + -90

Combine like terms: 90 + -90 = 0
0 + -2x = 60 + -90
-2x = 60 + -90

Combine like terms: 60 + -90 = -30
-2x = -30

Divide each side by '-2'.
x = 15

Simplifying
x = 15

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