2.1x-3.1=15.8

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Solution for 2.1x-3.1=15.8 equation: 



2.1x-3.1=15.8

We move all terms to the left:

2.1x-3.1-(15.8)=0

We add all the numbers together, and all the variables

2.1x-18.9=0

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

2.1x=18.9

x=18.9/2.1

x=8+1/1

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