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)
16 = r/(-2) // - r/(-2)
16-(r/(-2)) = 0
1/2*r+16 = 0 // - 16
1/2*r = -16 // : 1/2
r = -16/1/2
r = -32
r = -32
| d-10-8=-18 | | (9x-5)+(4x+29)=180 | | -7x+9=4x-6 | | 2/9[9n-(-15)] | | 5ax-12=32+2ax | | -8x+43=-5(x-8) | | 10d-6=4d-15 | | 24x=3x+10 | | x+9=4x+1 | | (13/16)-(3/8) | | 12=y-(-16) | | 2v^6/v^6 | | y+5=0.6(x+3) | | 10=-4+2 | | 233w=12 | | Y=5000+40*x-0.25*x*x+0.0002*x*x*x | | (-15)-b=-10 | | 6(x-4)+12-2(2x-6)=-13+2(3x+4)-6(x-2)+20 | | 0=-7k | | 30-3x=-97-9x | | 3/4×20=5/6×? | | 14.6/23=x/11.5 | | 7y-11=6y-10 | | n-(-24)=8 | | 0.15+0.02(25-x)=0.16(25) | | 3w/2=12 | | S/8=-5 | | 63/8+1/8= | | n-(-25)=75 | | b-703=w/3 | | 0.4x+0.6=0.9x-2.9 | | 13p+16=7 |