-4r-7=13-3r

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Solution for -4r-7=13-3r equation: 



-4r-7=13-3r

We move all terms to the left:

-4r-7-(13-3r)=0

We add all the numbers together, and all the variables

-4r-(-3r+13)-7=0

We get rid of parentheses

-4r+3r-13-7=0

We add all the numbers together, and all the variables

-1r-20=0

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

-r=20

r=20/-1

r=-20

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