-21=-4r-3r

Simple and best practice solution for -21=-4r-3r 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 -21=-4r-3r equation: 



-21=-4r-3r

We move all terms to the left:

-21-(-4r-3r)=0

We add all the numbers together, and all the variables

-(-7r)-21=0

We get rid of parentheses

7r-21=0

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

7r=21

r=21/7

r=3

See similar equations:

| 4/3=8/x-1 | | 10-4p=-9p-10 | | 18+2=-5(4x-4) | | 0=(a-10)+(a-2)+a | | k/2+9=16 | | 18-3k=-2k | | z/2+6=3 | | (3x-4)=(4x-3) | | 9x+3=7+17x | | -17y=-7 | | 1/2x-3x+3=-12 | | -0.75p-2=0/25p | | 9s-19=14+6s | | 6+8v=166 | | 3.66=3s | | 7+6c=-3+7c | | (x+5)/3=3 | | -6.12-18.2g=-13.1g | | 4x+2(x–9)=-21 | | 12z+10z+20=-16+10z | | -7/5=-2/3v-7/4 | | 11c-9=12c | | 6d-2d=48 | | 3x+5-6x=26 | | 3/y+2=5/y-1 | | 19+6p=91 | | 7-5n=7-5n | | 9n-6=-123 | | -41=-13+43a | | 9+3x=7+17x | | 4x+23=9x+14 | | -9+17j=20j |

Equations solver categories