9+x-3x=-9

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Solution for 9+x-3x=-9 equation: 


Simplifying
9 + x + -3x = -9

Combine like terms: x + -3x = -2x
9 + -2x = -9

Solving
9 + -2x = -9

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 + -2x = -9 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = -9 + -9
-2x = -9 + -9

Combine like terms: -9 + -9 = -18
-2x = -18

Divide each side by '-2'.
x = 9

Simplifying
x = 9

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