x+(x-9)=340

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Solution for x+(x-9)=340 equation:


Simplifying
x + (x + -9) = 340

Reorder the terms:
x + (-9 + x) = 340

Remove parenthesis around (-9 + x)
x + -9 + x = 340

Reorder the terms:
-9 + x + x = 340

Combine like terms: x + x = 2x
-9 + 2x = 340

Solving
-9 + 2x = 340

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 = 340 + 9

Combine like terms: -9 + 9 = 0
0 + 2x = 340 + 9
2x = 340 + 9

Combine like terms: 340 + 9 = 349
2x = 349

Divide each side by '2'.
x = 174.5

Simplifying
x = 174.5

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