r/4.2=-3.2

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Solution for r/4.2=-3.2 equation: 



r/4.2=-3.2

We move all terms to the left:

r/4.2-(-3.2)=0

We add all the numbers together, and all the variables

r/4.2+3.2=0

We multiply all the terms by the denominator


r+(3.2)*4.2=0

We add all the numbers together, and all the variables

r+13.44=0

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

r=-13.44

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