3r-7=7r-5

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



3r-7=7r-5

We move all terms to the left:

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

We get rid of parentheses

3r-7r+5-7=0

We add all the numbers together, and all the variables

-4r-2=0

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

-4r=2

r=2/-4

r=-1/2

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