x+2x+4x=84

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Solution for x+2x+4x=84 equation: 


Simplifying
x + 2x + 4x = 84

Combine like terms: x + 2x = 3x
3x + 4x = 84

Combine like terms: 3x + 4x = 7x
7x = 84

Solving
7x = 84

Solving for variable 'x'.

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

Divide each side by '7'.
x = 12

Simplifying
x = 12

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