r-7=5-3r

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Solution for r-7=5-3r equation: 



r-7=5-3r

We move all terms to the left:

r-7-(5-3r)=0

We add all the numbers together, and all the variables

r-(-3r+5)-7=0

We get rid of parentheses

r+3r-5-7=0

We add all the numbers together, and all the variables

4r-12=0

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

4r=12

r=12/4

r=3

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