x+7=9+81

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Solution for x+7=9+81 equation: 



x+7=9+81

We move all terms to the left:

x+7-(9+81)=0

We add all the numbers together, and all the variables

x+7-90=0

We add all the numbers together, and all the variables

x-83=0

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

x=83

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