If it's not what You are looking for type in the equation solver your own equation and let us solve it.
5r-3r-2r+r=12
We move all terms to the left:
5r-3r-2r+r-(12)=0
We add all the numbers together, and all the variables
r-12=0
We move all terms containing r to the left, all other terms to the right
r=12
| x+47=180-86 | | 2=5c | | 19x-8x-10x=8 | | -3v-6+5v=16 | | y/2-9=26 | | 9x=48-3x-12 | | b/5-6=7 | | 3x-42=2(x-12 | | 9x-10=8x+8 | | 10(4)+5y=75 | | 18=8-2v | | -20+4x+x=40 | | X-2y=-23y= | | 11m-3m=8 | | 2(4v+7=62 | | x^2-10x+36=2 | | 3x+1x-24= | | 5a–4=11 | | 5x+17=2(2x+8) | | 4(4x+5)=-5(2x-5) | | 8(3y-8)=-29 | | 1/4(2x+8)-1/5(15x-25)+11=10.5 | | 23x=72 | | -34=4v+6 | | 2x+2-4=2x+5 | | -42=-6(v+3) | | 5x-1+3x+35=90 | | 15+4=(7c+5) | | 9q-15q=12 | | 4k+3=8/14 | | 3n+4=18 | | 2x-14=142 |