21=3/7n

Simple and best practice solution for 21=3/7n equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 21=3/7n equation: 



21=3/7n

We move all terms to the left:

21-(3/7n)=0



Domain of the equation: 7n)!=0

n!=0/1

n!=0

n∈R



We add all the numbers together, and all the variables

-(+3/7n)+21=0

We get rid of parentheses

-3/7n+21=0

We multiply all the terms by the denominator


21*7n-3=0

Wy multiply elements

147n-3=0

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

147n=3

n=3/147

n=1/49

See similar equations:

| 7-p=p+8/3 | | 4(x2-10)=9 | | 5a+5=60 | | 7+5x=3x+3 | | 3=w/4+5 | | 3w+3=2w+9 | | 5x+24-4=50 | | 3x2=5x+8 | | x/10=12/6 | | 4(x2+2x)=12 | | 1+2x=-3x+4 | | 10/2=x/5 | | -2k+3+3k=8-26 | | -v/5+2=-6 | | y÷9=81 | | x/30=2/6 | | 36=x/2+11 | | x(5x2+40x-100)=0 | | x/8=12/3 | | +0.3x=9.1 | | 5(5x-2)(5x+6)=0 | | 1-9y=28 | | x/2=20/9 | | .-x+3=-4 | | 57=4x-15 | | 10/2=x/3 | | 5x3+40x2-100x=0 | | 3/2w-1/2=-2/3w-5 | | 10x+x=2700 | | 1/4=1/8m;m= | | (n-7)^2=6 | | .10x+x=3000 |

Equations solver categories