3+x=9-x

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Solution for 3+x=9-x equation:


Simplifying
3 + x = 9 + -1x

Solving
3 + x = 9 + -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.
3 + x + x = 9 + -1x + x

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

Combine like terms: -1x + x = 0
3 + 2x = 9 + 0
3 + 2x = 9

Add '-3' to each side of the equation.
3 + -3 + 2x = 9 + -3

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

Combine like terms: 9 + -3 = 6
2x = 6

Divide each side by '2'.
x = 3

Simplifying
x = 3

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