x-(-3)=15

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Solution for x-(-3)=15 equation: 


Simplifying
x + -1(-3) = 15

Multiply -1 * -3
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 = 12
x = 12

Simplifying
x = 12

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