(2x-15)+x=255

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Solution for (2x-15)+x=255 equation: 


Simplifying
(2x + -15) + x = 255

Reorder the terms:
(-15 + 2x) + x = 255

Remove parenthesis around (-15 + 2x)
-15 + 2x + x = 255

Combine like terms: 2x + x = 3x
-15 + 3x = 255

Solving
-15 + 3x = 255

Solving for variable 'x'.

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

Add '15' to each side of the equation.
-15 + 15 + 3x = 255 + 15

Combine like terms: -15 + 15 = 0
0 + 3x = 255 + 15
3x = 255 + 15

Combine like terms: 255 + 15 = 270
3x = 270

Divide each side by '3'.
x = 90

Simplifying
x = 90

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