31+x=90

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Solution for 31+x=90 equation: 


Simplifying
31 + x = 90

Solving
31 + x = 90

Solving for variable 'x'.

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

Add '-31' to each side of the equation.
31 + -31 + x = 90 + -31

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

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

Simplifying
x = 59

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