2/7n-1/7n+9=20

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Solution for 2/7n-1/7n+9=20 equation: 



2/7n-1/7n+9=20

We move all terms to the left:

2/7n-1/7n+9-(20)=0



Domain of the equation: 7n!=0

n!=0/7

n!=0

n∈R



We add all the numbers together, and all the variables

2/7n-1/7n-11=0

We multiply all the terms by the denominator


-11*7n+2-1=0

We add all the numbers together, and all the variables

-11*7n+1=0

Wy multiply elements

-77n+1=0

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

-77n=-1

n=-1/-77

n=1/77

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