x-(-9)=3

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Solution for x-(-9)=3 equation: 


Simplifying
x + -1(-9) = 3

Multiply -1 * -9
x + 9 = 3

Reorder the terms:
9 + x = 3

Solving
9 + x = 3

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + x = 3 + -9

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

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

Simplifying
x = -6

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