x+x+9=17

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Solution for x+x+9=17 equation: 


Simplifying
x + x + 9 = 17

Reorder the terms:
9 + x + x = 17

Combine like terms: x + x = 2x
9 + 2x = 17

Solving
9 + 2x = 17

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 + 2x = 17 + -9

Combine like terms: 9 + -9 = 0
0 + 2x = 17 + -9
2x = 17 + -9

Combine like terms: 17 + -9 = 8
2x = 8

Divide each side by '2'.
x = 4

Simplifying
x = 4

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