55/r-4=7

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Solution for 55/r-4=7 equation: 



55/r-4=7

We move all terms to the left:

55/r-4-(7)=0



Domain of the equation: r!=0

r∈R



We add all the numbers together, and all the variables

55/r-11=0

We multiply all the terms by the denominator


-11*r+55=0

We add all the numbers together, and all the variables

-11r+55=0

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

-11r=-55

r=-55/-11

r=+5

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