81/r=9

Simple and best practice solution for 81/r=9 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 81/r=9 equation: 



81/r=9

We move all terms to the left:

81/r-(9)=0



Domain of the equation: r!=0

r∈R



We multiply all the terms by the denominator


-9*r+81=0

We add all the numbers together, and all the variables

-9r+81=0

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

-9r=-81

r=-81/-9

r=+9

See similar equations:

| 9=x/3-8 | | 44=2x+5x+2 | | 7=-8+5w | | 6=v3+ 4 | | (-6/p)/2=-8 | | -6=2w-2 | | b-12=5;=60 | | -3y+2=-140y+30 | | (3x-40)(2x-5)=180 | | f-28=24 | | 3r-4=10 | | (12x-1+9x-15=53 | | 42/t=7 | | 16-5x=1-x | | v/2-7=10 | | 6+(y/4)=-18 | | 3x+8=3x+13 | | n-2=n | | 9=y/3+7 | | 9-9x=72 | | 2n=12+2/5 | | 2502.50=(55/100)p | | 11/4p-1.5=9 | | 7u-43=11u-83 | | 15s-88=4s | | 2n+6+3/5=19 | | 13x+3+120=180* | | –9w–2=7 | | 4n+32=200 | | 5s+3=8s | | 11/4p—1.5=9 | | 2502.50=55/100*p |

Equations solver categories