90-x=54

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Solution for 90-x=54 equation: 


Simplifying
90 + -1x = 54

Solving
90 + -1x = 54

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 = 54 + -90

Combine like terms: 90 + -90 = 0
0 + -1x = 54 + -90
-1x = 54 + -90

Combine like terms: 54 + -90 = -36
-1x = -36

Divide each side by '-1'.
x = 36

Simplifying
x = 36

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