7r+5=2r+50

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Solution for 7r+5=2r+50 equation: 



7r+5=2r+50

We move all terms to the left:

7r+5-(2r+50)=0

We get rid of parentheses

7r-2r-50+5=0

We add all the numbers together, and all the variables

5r-45=0

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

5r=45

r=45/5

r=9

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