x-(-3)=12

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Solution for x-(-3)=12 equation: 


Simplifying
x + -1(-3) = 12

Multiply -1 * -3
x + 3 = 12

Reorder the terms:
3 + x = 12

Solving
3 + x = 12

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

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

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

Simplifying
x = 9

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