-4r-13=7

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Solution for -4r-13=7 equation: 



-4r-13=7

We move all terms to the left:

-4r-13-(7)=0

We add all the numbers together, and all the variables

-4r-20=0

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

-4r=20

r=20/-4

r=-5

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