3x+9=-9x

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


Simplifying
3x + 9 = -9x

Reorder the terms:
9 + 3x = -9x

Solving
9 + 3x = -9x

Solving for variable 'x'.

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

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

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

Combine like terms: -9x + 9x = 0
9 + 12x = 0

Add '-9' to each side of the equation.
9 + -9 + 12x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 12x = 0 + -9
12x = 0 + -9

Combine like terms: 0 + -9 = -9
12x = -9

Divide each side by '12'.
x = -0.75

Simplifying
x = -0.75

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