-4.2=r+2.2

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Solution for -4.2=r+2.2 equation: 



-4.2=r+2.2

We move all terms to the left:

-4.2-(r+2.2)=0

We get rid of parentheses

-r-2.2-4.2=0

We add all the numbers together, and all the variables

-1r-6.4=0

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

-r=6.4

r=6.4/-1

r=-6+0.4/1

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