4.2=r/3

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Solution for 4.2=r/3 equation: 



4.2=r/3

We move all terms to the left:

4.2-(r/3)=0

We add all the numbers together, and all the variables

-(+r/3)+4.2=0

We get rid of parentheses

-r/3+4.2=0

We multiply all the terms by the denominator


-r+(4.2)*3=0

We add all the numbers together, and all the variables

-1r+12.6=0

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

-r=-12.6

r=-12.6/-1

r=12+0.6/1

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