3+5.5r=7r

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Solution for 3+5.5r=7r equation: 



3+5.5r=7r

We move all terms to the left:

3+5.5r-(7r)=0

We add all the numbers together, and all the variables

-1.5r+3=0

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

-1.5r=-3

r=-3/-1.5

r=+2

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