-7=4r+1

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Solution for -7=4r+1 equation: 



-7=4r+1

We move all terms to the left:

-7-(4r+1)=0

We get rid of parentheses

-4r-1-7=0

We add all the numbers together, and all the variables

-4r-8=0

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

-4r=8

r=8/-4

r=-2

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