9-15r=21

Simple and best practice solution for 9-15r=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 9-15r=21 equation: 



9-15r=21

We move all terms to the left:

9-15r-(21)=0

We add all the numbers together, and all the variables

-15r-12=0

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

-15r=12

r=12/-15

r=-4/5

See similar equations:

| 11a-15=-125 | | 3x^2+2x-1850=0 | | 11a-15=-15 | | 3x-(x-6)=4x-12 | | 3x+20=2x+33 | | 100+0.60=70+0.80x | | 12=(45x)2 | | 3h-12=6 | | 2x-33=3x+20 | | -2x-2-5+x=-x-1-5-1 | | y×0.8=0.48 | | 6-30x=66 | | 8+2x-5=4(x+3) | | -7+x/5=-4 | | (2x-4)+(3x+9)=180 | | 6x+26=2(x-7) | | 12-3q=9 | | 6+n/14=5 | | 4x-7+2x=8x-15 | | 180=35+3x-7 | | 7n-3=23 | | 0x+5=7x+3 | | -8-10m=152 | | 130+0.40=70+0.50x | | 3x+1=4x–8. | | 4y-4=5+y | | x=17=11 | | n/7+4=2 | | 6y-42=180 | | 5x+-14=5x-14 | | 8=3z | | k/3+10=15 |

Equations solver categories