7/r+-42=3/r-10

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Solution for 7/r+-42=3/r-10 equation: 



7/r+-42=3/r-10

We move all terms to the left:

7/r+-42-(3/r-10)=0



Domain of the equation: r!=0

r∈R





Domain of the equation: r-10)!=0

r∈R



We add all the numbers together, and all the variables

7/r-(3/r-10)=0

We get rid of parentheses

7/r-3/r+10=0

We multiply all the terms by the denominator


10*r+7-3=0

We add all the numbers together, and all the variables

10r+4=0

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

10r=-4

r=-4/10

r=-2/5

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