90-3x=31

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Solution for 90-3x=31 equation: 


Simplifying
90 + -3x = 31

Solving
90 + -3x = 31

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 + -3x = 31 + -90

Combine like terms: 90 + -90 = 0
0 + -3x = 31 + -90
-3x = 31 + -90

Combine like terms: 31 + -90 = -59
-3x = -59

Divide each side by '-3'.
x = 19.66666667

Simplifying
x = 19.66666667

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