12=r-3r

Simple and best practice solution for 12=r-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 12=r-3r equation: 



12=r-3r

We move all terms to the left:

12-(r-3r)=0

We add all the numbers together, and all the variables

-(-2r)+12=0

We get rid of parentheses

2r+12=0

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

2r=-12

r=-12/2

r=-6

See similar equations:

| 6v=1-v | | 6(3n+1)=7(7n+6)+9 | | 2u2-3u+2=0 | | 187=2x+5(-3x+12) | | 8(3+x)=5(2x+8) | | 5-3*(3-5x)=71 | | (20x-5)+(18-5)=180 | | 1/x+3/(x-7)=0 | | 16+3w=34 | | 8p+10=-10+2p+3p | | 27y=-63 | | 3(x-9)+7=-20 | | 2=1+2/(z+2) | | 4x-7/4x+6=5/6 | | 135+27x=252+45+9x | | 63+x+2x=3 | | -3x+32=5x+8 | | 3x+7x+5=41 | | 3x+7x+5=29 | | -6(8-x)=-66 | | -8x+5x+3=5x | | -3(n+4)=-2n-3 | | 802-0,0197x=110+0,015x | | 4-2(x-3)=23 | | y-5=2y | | 17/x-3=5/x+4 | | 7x(2+2x)=0 | | 13-37/x=4+8/x | | 2⅓x+3/5=4⅔-7/6 | | 3c^2-5cc=3 | | 2x-40=3x-10 | | 4.6=v/0.6 |

Equations solver categories