X+3=12-3

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Solution for X+3=12-3 equation: 


Simplifying
X + 3 = 12 + -3

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

Combine like terms: 12 + -3 = 9
3 + X = 9

Solving
3 + X = 9

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 = 9 + -3

Combine like terms: 3 + -3 = 0
0 + X = 9 + -3
X = 9 + -3

Combine like terms: 9 + -3 = 6
X = 6

Simplifying
X = 6

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