8.7+x=13.9

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Solution for 8.7+x=13.9 equation: 



8.7+x=13.9

We move all terms to the left:

8.7+x-(13.9)=0

We add all the numbers together, and all the variables

x-5.2=0

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

x=5.2

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