9-x=-3x

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Solution for 9-x=-3x equation:


Simplifying
9 + -1x = -3x

Solving
9 + -1x = -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
9 + -1x + 3x = -3x + 3x

Combine like terms: -1x + 3x = 2x
9 + 2x = -3x + 3x

Combine like terms: -3x + 3x = 0
9 + 2x = 0

Add '-9' to each side of the equation.
9 + -9 + 2x = 0 + -9

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

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

Divide each side by '2'.
x = -4.5

Simplifying
x = -4.5

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