12d+21=9d

Simple and best practice solution for 12d+21=9d 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 12d+21=9d equation: 



12d+21=9d

We move all terms to the left:

12d+21-(9d)=0

We add all the numbers together, and all the variables

3d+21=0

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

3d=-21

d=-21/3

d=-7

See similar equations:

| -16+6x=4x+8 | | 12d+5=8d | | -34-6x=38+3x | | 6-x=10-4x | | X-43=34-6x | | 14+2b=20+1.50b | | -73+5x=35-4x | | -5x+-5+3x=6+-4x+3 | | 14+2l=20+1.50l | | -84+6x=43-3x | | 9d-8=7d+16 | | 3(2x−7)=3 | | 3y(4y−1)−2y(6y−5)=9y−8(3+y) | | 9/2x+12=21 | | 7-x=x+1 | | 3(-4x+2)=-54 | | 15a-6=-5a+14 | | x-2x-5=3 | | 6×3=(s×5)–(s×2) | | 40+10x=60+x | | 6k+-7=9k | | y=45-9 | | 3w-40=14 | | x/6+21=27 | | 7.2÷(w·6)=1.2 | | 6x=4=-26 | | 7w-3(4w+8)=-14 | | g-(3/4)=4 | | 2(11.95)+x(13.95)=93.65 | | 2(11.95)+x(13.95)=$93.65 | | g-3/4=4 | | M2+6m-23=-7 |

Equations solver categories