X+12=15+x

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Solution for X+12=15+x equation: 


Simplifying
X + 12 = 15 + x

Reorder the terms:
12 + X = 15 + x

Solving
12 + X = 15 + x

Solving for variable 'X'.

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

Add '-12' to each side of the equation.
12 + -12 + X = 15 + -12 + x

Combine like terms: 12 + -12 = 0
0 + X = 15 + -12 + x
X = 15 + -12 + x

Combine like terms: 15 + -12 = 3
X = 3 + x

Simplifying
X = 3 + x

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