x+2x-75=90

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Solution for x+2x-75=90 equation:


Simplifying
x + 2x + -75 = 90

Reorder the terms:
-75 + x + 2x = 90

Combine like terms: x + 2x = 3x
-75 + 3x = 90

Solving
-75 + 3x = 90

Solving for variable 'x'.

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

Add '75' to each side of the equation.
-75 + 75 + 3x = 90 + 75

Combine like terms: -75 + 75 = 0
0 + 3x = 90 + 75
3x = 90 + 75

Combine like terms: 90 + 75 = 165
3x = 165

Divide each side by '3'.
x = 55

Simplifying
x = 55

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