3x-9=7+2-x

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Solution for 3x-9=7+2-x equation:


Simplifying
3x + -9 = 7 + 2 + -1x

Reorder the terms:
-9 + 3x = 7 + 2 + -1x

Combine like terms: 7 + 2 = 9
-9 + 3x = 9 + -1x

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

Combine like terms: 3x + x = 4x
-9 + 4x = 9 + -1x + x

Combine like terms: -1x + x = 0
-9 + 4x = 9 + 0
-9 + 4x = 9

Add '9' to each side of the equation.
-9 + 9 + 4x = 9 + 9

Combine like terms: -9 + 9 = 0
0 + 4x = 9 + 9
4x = 9 + 9

Combine like terms: 9 + 9 = 18
4x = 18

Divide each side by '4'.
x = 4.5

Simplifying
x = 4.5

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