7r-8=104

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Solution for 7r-8=104 equation: 



7r-8=104

We move all terms to the left:

7r-8-(104)=0

We add all the numbers together, and all the variables

7r-112=0

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

7r=112

r=112/7

r=16

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