X-3=12+x

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Solution for X-3=12+x equation: 


Simplifying
X + -3 = 12 + x

Reorder the terms:
-3 + X = 12 + x

Solving
-3 + X = 12 + x

Solving for variable 'X'.

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

Add '3' to each side of the equation.
-3 + 3 + X = 12 + 3 + x

Combine like terms: -3 + 3 = 0
0 + X = 12 + 3 + x
X = 12 + 3 + x

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

Simplifying
X = 15 + x

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