7.5+x=19.9

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Solution for 7.5+x=19.9 equation: 



7.5+x=19.9

We move all terms to the left:

7.5+x-(19.9)=0

We add all the numbers together, and all the variables

x-12.4=0

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

x=12.4

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