7x+9x+12x=84

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Solution for 7x+9x+12x=84 equation: 


Simplifying
7x + 9x + 12x = 84

Combine like terms: 7x + 9x = 16x
16x + 12x = 84

Combine like terms: 16x + 12x = 28x
28x = 84

Solving
28x = 84

Solving for variable 'x'.

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

Divide each side by '28'.
x = 3

Simplifying
x = 3

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