If it's not what You are looking for type in the equation solver your own equation and let us solve it.
21=11v-8v
We move all terms to the left:
21-(11v-8v)=0
We add all the numbers together, and all the variables
-(+3v)+21=0
We get rid of parentheses
-3v+21=0
We move all terms containing v to the left, all other terms to the right
-3v=-21
v=-21/-3
v=+7
| 14+x+2=14+x+2 | | 1.2(b−12)=96 | | 12m−m−7m+3= | | 2/4x+4=1/4x+9 | | 12x-41=5x | | -9+6b=5b | | 24x+4=14x+9 | | 10+6f=8f-10 | | 2-4q=-2q | | -102=6(1-3a) | | 2−4q=-2q | | -49-8(x/3+x^2)=9x^2)=9x^2+5(x/3+2) | | 10-z+10=3z-8 | | -6w=-5w+8 | | 6-5x-2=3x-12+2x | | 5(x/2+x^2)+3=6(x^2+x/2+1) | | 12n=5n+11 | | 12n=5n=11 | | 60=4v-16 | | -3x–4+8x=3x+10 | | 9v+17=-1 | | 11+8=-2+9x | | 3x–4+8x=3x+10 | | -9x+15=-12 | | 4-3f=-9f+4 | | -5p+40=15 | | 3x+42=8x-10 | | 59y-29=10 | | 6+2v=12 | | 250x+130=125x+155 | | 9b=10b+9 | | 10+5t=4t |