7r-3=3r+13

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Solution for 7r-3=3r+13 equation: 



7r-3=3r+13

We move all terms to the left:

7r-3-(3r+13)=0

We get rid of parentheses

7r-3r-13-3=0

We add all the numbers together, and all the variables

4r-16=0

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

4r=16

r=16/4

r=4

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