4.2r=16.8

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Solution for 4.2r=16.8 equation: 



4.2r=16.8

We move all terms to the left:

4.2r-(16.8)=0

We add all the numbers together, and all the variables

4.2r-16.8=0

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

4.2r=16.8

r=16.8/4.2

r=4

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