3/5n+8=21/5n

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Solution for 3/5n+8=21/5n equation: 



3/5n+8=21/5n

We move all terms to the left:

3/5n+8-(21/5n)=0



Domain of the equation: 5n!=0

n!=0/5

n!=0

n∈R





Domain of the equation: 5n)!=0

n!=0/1

n!=0

n∈R



We add all the numbers together, and all the variables

3/5n-(+21/5n)+8=0

We get rid of parentheses

3/5n-21/5n+8=0

We multiply all the terms by the denominator


8*5n+3-21=0

We add all the numbers together, and all the variables

8*5n-18=0

Wy multiply elements

40n-18=0

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

40n=18

n=18/40

n=9/20

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