3r+10=7r-50

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Solution for 3r+10=7r-50 equation: 



3r+10=7r-50

We move all terms to the left:

3r+10-(7r-50)=0

We get rid of parentheses

3r-7r+50+10=0

We add all the numbers together, and all the variables

-4r+60=0

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

-4r=-60

r=-60/-4

r=+15

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