X+(-3)=15

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Solution for X+(-3)=15 equation: 


Simplifying
X + (-3) = 15
X + -3 = 15

Reorder the terms:
-3 + X = 15

Solving
-3 + X = 15

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 = 15 + 3

Combine like terms: -3 + 3 = 0
0 + X = 15 + 3
X = 15 + 3

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

Simplifying
X = 18

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