3r-8=-7

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Solution for 3r-8=-7 equation: 



3r-8=-7

We move all terms to the left:

3r-8-(-7)=0

We add all the numbers together, and all the variables

3r-1=0

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

3r=1

r=1/3

r=1/3

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