3x+9x=50

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Solution for 3x+9x=50 equation: 



3x+9x=50

We move all terms to the left:

3x+9x-(50)=0

We add all the numbers together, and all the variables

12x-50=0

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

12x=50

x=50/12

x=4+1/6

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