20n+9/n=21

Simple and best practice solution for 20n+9/n=21 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 20n+9/n=21 equation: 



20n+9/n=21

We move all terms to the left:

20n+9/n-(21)=0



Domain of the equation: n!=0

n∈R



We multiply all the terms by the denominator


20n*n-21*n+9=0

We add all the numbers together, and all the variables

-21n+20n*n+9=0

Wy multiply elements

20n^2-21n+9=0

a = 20; b = -21; c = +9;
Δ = b2-4ac
Δ = -212-4·20·9
Δ = -279
Delta is less than zero, so there is no solution for the equation

See similar equations:

| 14-2p=5p | | 3s-17=19 | | u-6/8=0 | | 5+6r=29 | | 13d+2=15d | | t+28/3=11 | | 9=8c+15/c | | 6+7p=34 | | 15x^2+43x+1225=0 | | (3x+1=x+2)=(3x-2=x+1) | | 39-94=4u | | s-4/3=2 | | -4(x-3)+2x=20 | | 5x+7+4x+11=3x-24 | | 4x+4+6x-4=180° | | 8(3t+2)=-40 | | 8+3+5f+4f= | | 8(3t+2)=-20 | | 8=3a=4 | | 13.3-b=2.3 | | 4(6x+)=36 | | 5x^-10x-3=0 | | 5x^-10x-3=9 | | 4c+5c= | | 2(4x-4)=51 | | 4y+5y-8= | | 7-9/2m=1 | | X+8x=40 | | 4p-2=14p= | | x-20/100=70 | | -15+5y-10=0 | | 8x+6x=9-8 |

Equations solver categories