-4r=13.2

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Solution for -4r=13.2 equation: 



-4r=13.2

We move all terms to the left:

-4r-(13.2)=0

We add all the numbers together, and all the variables

-4r-13.2=0

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

-4r=13.2

r=13.2/-4

r=-3+1/3.3333333333333

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