7x+12x=80

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Solution for 7x+12x=80 equation: 



7x+12x=80

We move all terms to the left:

7x+12x-(80)=0

We add all the numbers together, and all the variables

19x-80=0

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

19x=80

x=80/19

x=4+4/19

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