21=-9(8r-3)

Simple and best practice solution for 21=-9(8r-3) 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=-9(8r-3) equation:


21=-9(8r-3)

We simplify the equation to the form, which is simple to understand 
21=-9(8r-3)

Reorder the terms in parentheses
21=+(-72r+27)

Remove unnecessary parentheses
+21=-72r+27

We move all terms containing r to the left and all other terms to the right. 
+72r=+27-21

We simplify left and right side of the equation. 
+72r=+6

We divide both sides of the equation by 072 to get r. 
r=0.0833333333333

See similar equations:

| 20x^2-20x^2= | | 4z-9z=6z-3+2 | | 2x+4=2x+16 | | 8x^3+30x^2+18x= | | 4x+5=3x+4 | | 3(2x-7)+7=2(6x+4)+6x-5 | | 6x^2+11x-30=0 | | -1+x=7x+2 | | -8m+55-3(m-2)=7m-(9m-8)-2m+4 | | 2x^2+11x-30=0 | | m^2+2m-24=-21 | | 10y+17=3y+14 | | 9(X+3)-1=-7(X+-3) | | 16x^2-8x=15 | | x-10=-2x+2 | | -2m-2-3(m-1)=8m-(6m-1)-9m+6 | | 6z+3z=-2z-3-8z | | 3.8d+7=-8.2+70 | | -21=m^2+2m-24 | | 2n^2+20n+40=-2 | | 19=x+7 | | 5=8x+y | | -[10z-(14z+10)]=10+(3z+6) | | -2(m+5)-9(7m+3)=-66(m+1)+8 | | 13+3p=2 | | 235+.75x=125+1.63x | | -5(b+1)-6b+4= | | 2[p-(2p+9)+5]=2(p+4) | | 5(3x-7)-4(x+3)-18x= | | x^2+30x=122 | | 4x-5-7x=20 | | 235+.75x=1.63x |

Equations solver categories