-1+3r=4r+7

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Solution for -1+3r=4r+7 equation: 



-1+3r=4r+7

We move all terms to the left:

-1+3r-(4r+7)=0

We get rid of parentheses

3r-4r-7-1=0

We add all the numbers together, and all the variables

-1r-8=0

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

-r=8

r=8/-1

r=-8

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