3.91x+15.64=31.28

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Solution for 3.91x+15.64=31.28 equation: 



3.91x+15.64=31.28

We move all terms to the left:

3.91x+15.64-(31.28)=0

We add all the numbers together, and all the variables

3.91x-15.64=0

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

3.91x=15.64

x=15.64/3.91

x=4

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