If it's not what You are looking for type in the equation solver your own equation and let us solve it.
20r-10r-8r=12
We move all terms to the left:
20r-10r-8r-(12)=0
We add all the numbers together, and all the variables
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
| 2(y+8)-13=33 | | -4(x+-2)+5x=2(x+4)-x | | n=-25/3 | | 14r-10r+r-4r=4 | | 8(x-1)-2x=2x=-(x+50) | | -28=x+x+x+4x | | 15t=90 | | g/4-3=3 | | t^2-24t-25=0 | | -4(x+-2)+5x=x | | -4(x+-2)+5x=4(x+2)-5x | | -16=-2(3n-1) | | 3n=-25 | | -14.6=y/7-3.4 | | -4(x+-2)+5x=x+8 | | f/2+3=4 | | 1/4x+3=2/3x+1 | | -6w+9=7-10w-10w | | 17=3g | | z/6+2=-44 | | 14x-10x=3x+17 | | (x+5)*28=2x•21 | | 12a+5-8a=-15 | | 3(5x+6)=30 | | 10xx/2-5=3 | | (2t–7)-3=9 | | n^2-70=-4n+7 | | x3-7=-2 | | 3/4=-1/8+x | | x+2=3x-9+2x+1 | | 4(8k+7)=8k-20 | | k/5+7=26 |