x-7.8=2.2

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Solution for x-7.8=2.2 equation: 



x-7.8=2.2

We move all terms to the left:

x-7.8-(2.2)=0

We add all the numbers together, and all the variables

x-10=0

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

x=10

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