3x+9x=56

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Solution for 3x+9x=56 equation: 



3x+9x=56

We move all terms to the left:

3x+9x-(56)=0

We add all the numbers together, and all the variables

12x-56=0

We move all terms containing x to the left, all other terms to the right

12x=56

x=56/12

x=4+2/3

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