21+3r=-6(3-2r)+4r

Simple and best practice solution for 21+3r=-6(3-2r)+4r 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+3r=-6(3-2r)+4r equation: 



21+3r=-6(3-2r)+4r

We move all terms to the left:

21+3r-(-6(3-2r)+4r)=0

We add all the numbers together, and all the variables

3r-(-6(-2r+3)+4r)+21=0



We calculate terms in parentheses: -(-6(-2r+3)+4r), so:

-6(-2r+3)+4r

We add all the numbers together, and all the variables

4r-6(-2r+3)

We multiply parentheses

4r+12r-18

We add all the numbers together, and all the variables

16r-18

Back to the equation:

-(16r-18)



We get rid of parentheses

3r-16r+18+21=0

We add all the numbers together, and all the variables

-13r+39=0

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

-13r=-39

r=-39/-13

r=+3

See similar equations:

| 4(1-4n)=-92 | | 1/2*x+20=3x-85 | | 4/15=6/x+5 | | 112w-(-20)=118w-4 | | 6x-7(-5)=35 | | -9t=3+15 | | -v+22=251 | | 9c=8c−9 | | 6v-1=-73 | | 24x-22=4x-4+20x | | 8x-16+8x-16=9x+87 | | 10x/6-2=8 | | 4(8+v)=46 | | (2n+22)=(5n+29) | | -2(x-5)=14-4x | | -m+6m=10 | | x2-3x+8=0 | | -0.137r-5=-4.849 | | 2/5n-9=3/5n | | 4/9x+1=-3 | | -3=x-9/4 | | 9x+4=13/4 | | -2(s-11)=22 | | 6(y-1/3)-y=6(3-y) | | 5y-14-2y+9=0 | | 10+5x=4+6x | | 4g+2((-6+4g)=1-g | | 5x-11+5x-11=98 | | x/20=10/20 | | 0.8(15x+20)−7x=0.83(12x−24)+6 | | 112=8(b+8) | | 6(y-1/3)-y=6(3-7) |

Equations solver categories