0.4r=6.28

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Solution for 0.4r=6.28 equation: 



0.4r=6.28

We move all terms to the left:

0.4r-(6.28)=0

We add all the numbers together, and all the variables

0.4r-6.28=0

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

0.4r=6.28

r=6.28/0.4

r=15+0.28/0.4

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