3x+9-x+x=39

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Solution for 3x+9-x+x=39 equation:


Simplifying
3x + 9 + -1x + x = 39

Reorder the terms:
9 + 3x + -1x + x = 39

Combine like terms: 3x + -1x = 2x
9 + 2x + x = 39

Combine like terms: 2x + x = 3x
9 + 3x = 39

Solving
9 + 3x = 39

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 3x = 39 + -9

Combine like terms: 9 + -9 = 0
0 + 3x = 39 + -9
3x = 39 + -9

Combine like terms: 39 + -9 = 30
3x = 30

Divide each side by '3'.
x = 10

Simplifying
x = 10

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