X-31=9

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Solution for X-31=9 equation: 


Simplifying
X + -31 = 9

Reorder the terms:
-31 + X = 9

Solving
-31 + X = 9

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 = 9 + 31

Combine like terms: -31 + 31 = 0
0 + X = 9 + 31
X = 9 + 31

Combine like terms: 9 + 31 = 40
X = 40

Simplifying
X = 40

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