If it's not what You are looking for type in the equation solver your own equation and let us solve it.
d in (-oo:+oo)
1/2-2*d-(3*d) = -5/2 // + -5/2
1/2-2*d-(3*d)-(-5/2) = 0
1/2-2*d-3*d+5/2 = 0
3-5*d = 0 // - 3
-5*d = -3 // : -5
d = -3/(-5)
d = 3/5
d = 3/5
| -2b=2 | | -2b=18 | | -2b=-8/5 | | -2b=-4/7 | | -2b=-2/7 | | -2b=-2/3 | | -2b=-14 | | -2b-8=-22/3 | | -2b-6=-8 | | -2b-4/9=-94/9 | | -2b-3/10=77/10 | | -2b-2/3=46/3 | | -2b-2/3=-5/3 | | -2b-2=-10 | | -2b-1/2=-37/2 | | -2b+8=62/7 | | -2b+7/10+7b=157/10 | | -2b+7=b-26 | | -2b+4/7=592/7+5b | | -2b+4/7+4/5b=272/35 | | -2b+4-4b=2 | | -2b+3/10=-2/5b+41/30 | | -2b+1/7=71/7 | | -2b+1/4=-47/4 | | -2b+1/3=4/3 | | -2b+1=-5/7 | | -2b+1+6/7b=31/7 | | 8(x)-2(0)=16 | | 8(0)-2(y)=16 | | -2a-7=-a-73/10 | | -2a-6/7=-152/63 | | -2a-3=-5 |