X+2X=90

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Solution for X+2X=90 equation: 


Simplifying
X + 2X = 90

Combine like terms: X + 2X = 3X
3X = 90

Solving
3X = 90

Solving for variable 'X'.

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

Divide each side by '3'.
X = 30

Simplifying
X = 30

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