1/x-3+4=21/x-3

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Solution for 1/x-3+4=21/x-3 equation: 



1/x-3+4=21/x-3

We move all terms to the left:

1/x-3+4-(21/x-3)=0



Domain of the equation: x!=0

x∈R





Domain of the equation: x-3)!=0

x∈R



We add all the numbers together, and all the variables

1/x-(21/x-3)+1=0

We get rid of parentheses

1/x-21/x+3+1=0

We multiply all the terms by the denominator


3*x+1*x+1-21=0

We add all the numbers together, and all the variables

4x-20=0

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

4x=20

x=20/4

x=5

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