-4r=0.4

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Solution for -4r=0.4 equation: 



-4r=0.4

We move all terms to the left:

-4r-(0.4)=0

We add all the numbers together, and all the variables

-4r-0.4=0

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

-4r=0.4

r=0.4/-4

r=-0.4/4

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