18-9r=81

Simple and best practice solution for 18-9r=81 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 18-9r=81 equation: 



18-9r=81

We move all terms to the left:

18-9r-(81)=0

We add all the numbers together, and all the variables

-9r-63=0

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

-9r=63

r=63/-9

r=-7

See similar equations:

| 0.14x+0.15(900-x)=107 | | -5.1=6.1+w/7 | | (2x+5)(3x-2)=(6x+4)(x-8)-33 | | 0.02x+0.19(x+8000)=2990 | | 6^(4x)=9 | | 278+12x=406 | | 3x+7/9+x-9/9=x+2/6 | | x+9/7+2x+6/6=x-4 | | 0.07x+0.15(x+5000)=2290 | | -8x/5+8/5=-1/6 | | 1/6r-(1/3r)=-2 | | 404=-0.8x | | 4x+11=2x+11.5 | | 0=-5t^2-12t+65 | | x-4/5+8/5=-x/6 | | x+3/5+3x-4/4=x-1 | | -18=2(x-3)-5x | | (4x^2-48x+80)=0 | | 7=4m-5 | | 32=3(u+7)+8u | | 87-w=181 | | (x+2)(x-3)=x²+5x+36 | | 4-(1-x)=17 | | k-8/5=6 | | 5(2x-30)=4(x+24) | | 2^10-4^(3x)=0 | | -15=3/5n | | (8u+2)=40 | | 4x^2+5=13 | | -3x+6-6(x-1)=-2(x-4)-6x+6 | | 3y+2(y-7)=-24 | | 8(x-3)=5(x+5)+3 |

Equations solver categories