12.5x+3x=20

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Solution for 12.5x+3x=20 equation: 



12.5x+3x=20

We move all terms to the left:

12.5x+3x-(20)=0

We add all the numbers together, and all the variables

15.5x-20=0

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

15.5x=20

x=20/15.5

x=1+3/10.333333333333

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