x+x-255=345

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Solution for x+x-255=345 equation: 


Simplifying
x + x + -255 = 345

Reorder the terms:
-255 + x + x = 345

Combine like terms: x + x = 2x
-255 + 2x = 345

Solving
-255 + 2x = 345

Solving for variable 'x'.

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

Add '255' to each side of the equation.
-255 + 255 + 2x = 345 + 255

Combine like terms: -255 + 255 = 0
0 + 2x = 345 + 255
2x = 345 + 255

Combine like terms: 345 + 255 = 600
2x = 600

Divide each side by '2'.
x = 300

Simplifying
x = 300

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