90=x+30-2y

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Solution for 90=x+30-2y equation:


Simplifying
90 = x + 30 + -2y

Reorder the terms:
90 = 30 + x + -2y

Solving
90 = 30 + x + -2y

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 = 30 + x + -1x + -2y

Combine like terms: x + -1x = 0
90 + -1x = 30 + 0 + -2y
90 + -1x = 30 + -2y

Add '-90' to each side of the equation.
90 + -90 + -1x = 30 + -90 + -2y

Combine like terms: 90 + -90 = 0
0 + -1x = 30 + -90 + -2y
-1x = 30 + -90 + -2y

Combine like terms: 30 + -90 = -60
-1x = -60 + -2y

Divide each side by '-1'.
x = 60 + 2y

Simplifying
x = 60 + 2y

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