r/5=-4.2

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Solution for r/5=-4.2 equation: 



r/5=-4.2

We move all terms to the left:

r/5-(-4.2)=0

We add all the numbers together, and all the variables

r/5+4.2=0

We multiply all the terms by the denominator


r+(4.2)*5=0

We add all the numbers together, and all the variables

r+21=0

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

r=-21

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