90-x=3y

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Solution for 90-x=3y equation:


Simplifying
90 + -1x = 3y

Solving
90 + -1x = 3y

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-90' to each side of the equation.
90 + -90 + -1x = -90 + 3y

Combine like terms: 90 + -90 = 0
0 + -1x = -90 + 3y
-1x = -90 + 3y

Divide each side by '-1'.
x = 90 + -3y

Simplifying
x = 90 + -3y

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