8x+12x=280

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Solution for 8x+12x=280 equation: 



8x+12x=280

We move all terms to the left:

8x+12x-(280)=0

We add all the numbers together, and all the variables

20x-280=0

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

20x=280

x=280/20

x=14

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