3-1/2n=21

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Solution for 3-1/2n=21 equation: 



3-1/2n=21

We move all terms to the left:

3-1/2n-(21)=0



Domain of the equation: 2n!=0

n!=0/2

n!=0

n∈R



We add all the numbers together, and all the variables

-1/2n-18=0

We multiply all the terms by the denominator


-18*2n-1=0

Wy multiply elements

-36n-1=0

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

-36n=1

n=1/-36

n=-1/36

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