3x+9=-x+9

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


Simplifying
3x + 9 = -1x + 9

Reorder the terms:
9 + 3x = -1x + 9

Reorder the terms:
9 + 3x = 9 + -1x

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

Combine like terms: 9 + -9 = 0
0 + 3x = 9 + -9 + -1x
3x = 9 + -9 + -1x

Combine like terms: 9 + -9 = 0
3x = 0 + -1x
3x = -1x

Solving
3x = -1x

Solving for variable 'x'.

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

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

Combine like terms: 3x + x = 4x
4x = -1x + x

Combine like terms: -1x + x = 0
4x = 0

Divide each side by '4'.
x = 0

Simplifying
x = 0

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