x+2x+3x=126

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Solution for x+2x+3x=126 equation: 


Simplifying
x + 2x + 3x = 126

Combine like terms: x + 2x = 3x
3x + 3x = 126

Combine like terms: 3x + 3x = 6x
6x = 126

Solving
6x = 126

Solving for variable 'x'.

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

Divide each side by '6'.
x = 21

Simplifying
x = 21

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