If it's not what You are looking for type in the equation solver your own equation and let us solve it.
r in (-oo:+oo)
6 = r+8/2 // - r+8/2
6-r-(8/2) = 0
6-r-4 = 0
2-r = 0 // - 2
-r = -2 // * -1
r = 2
r = 2
| 4w+34=6(w+5) | | 8x^2+40x-48=0 | | 7(7+5x)+17= | | -7(v+4)=9v+36 | | 198=6(5x+2) | | -16x^2+24x+1500=0 | | 132=10n+3n-n | | 18=14m-6 | | 18+3x=66 | | x+2y+8z-90=0 | | 6x-5=13+2x | | w/2+17=26 | | 8z-3z=45 | | 14x-4y=-50 | | 1/2(9x+8+9x) | | 180-(10+70)-(60+20)=20 | | (x/-4)=9 | | 7y+3y=50 | | 4v-32=7(v-8) | | 4x-11/2(x^2)-11x+15 | | 8k-19=77 | | 6x-22=+7x+4 | | 2x-7y=1 | | c/-4=-4 | | 4x-11/2x^2-11x+15 | | 9-m/2=13 | | 2x-7y=4 | | 9t=-63 | | -x^2=5 | | tanx=40 | | 6x^4+x^2-1=0 | | y/3-21=-18 |