x-12.3=8.7

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Solution for x-12.3=8.7 equation: 



x-12.3=8.7

We move all terms to the left:

x-12.3-(8.7)=0

We add all the numbers together, and all the variables

x-21=0

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

x=21

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