2.2x-3.9=15.9

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Solution for 2.2x-3.9=15.9 equation: 



2.2x-3.9=15.9

We move all terms to the left:

2.2x-3.9-(15.9)=0

We add all the numbers together, and all the variables

2.2x-19.8=0

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

2.2x=19.8

x=19.8/2.2

x=9

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