X+31=42

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Solution for X+31=42 equation: 


Simplifying
X + 31 = 42

Reorder the terms:
31 + X = 42

Solving
31 + X = 42

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 = 42 + -31

Combine like terms: 31 + -31 = 0
0 + X = 42 + -31
X = 42 + -31

Combine like terms: 42 + -31 = 11
X = 11

Simplifying
X = 11

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