3/x-5=4/x+7

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Solution for 3/x-5=4/x+7 equation: 



3/x-5=4/x+7

We move all terms to the left:

3/x-5-(4/x+7)=0



Domain of the equation: x!=0

x∈R





Domain of the equation: x+7)!=0

x∈R



We get rid of parentheses

3/x-4/x-7-5=0

We multiply all the terms by the denominator


-7*x-5*x+3-4=0

We add all the numbers together, and all the variables

-12x-1=0

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

-12x=1

x=1/-12

x=-1/12

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