-7-3r=-4r

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



-7-3r=-4r

We move all terms to the left:

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

We get rid of parentheses

-3r+4r-7=0

We add all the numbers together, and all the variables

r-7=0

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

r=7

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