X-3-15=12

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Solution for X-3-15=12 equation: 


Simplifying
X + -3 + -15 = 12

Reorder the terms:
-3 + -15 + X = 12

Combine like terms: -3 + -15 = -18
-18 + X = 12

Solving
-18 + X = 12

Solving for variable 'X'.

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

Add '18' to each side of the equation.
-18 + 18 + X = 12 + 18

Combine like terms: -18 + 18 = 0
0 + X = 12 + 18
X = 12 + 18

Combine like terms: 12 + 18 = 30
X = 30

Simplifying
X = 30

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