3x+x+2x=90

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Solution for 3x+x+2x=90 equation: 


Simplifying
3x + x + 2x = 90

Combine like terms: 3x + x = 4x
4x + 2x = 90

Combine like terms: 4x + 2x = 6x
6x = 90

Solving
6x = 90

Solving for variable 'x'.

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

Divide each side by '6'.
x = 15

Simplifying
x = 15

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