2/r-7=5/r-4

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Solution for 2/r-7=5/r-4 equation: 



2/r-7=5/r-4

We move all terms to the left:

2/r-7-(5/r-4)=0



Domain of the equation: r!=0

r∈R





Domain of the equation: r-4)!=0

r∈R



We get rid of parentheses

2/r-5/r+4-7=0

We multiply all the terms by the denominator


4*r-7*r+2-5=0

We add all the numbers together, and all the variables

-3r-3=0

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

-3r=3

r=3/-3

r=-1

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