If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( b )
18*b^-1 = 0
b = 0
18*b^-1 = 0
18*b^-1 = 0
18*b^-1 = 0 // : 18
b^-1 = 0
b należy do O
b = 0
b = 0
b in (-oo:0) U (0:+oo)
24/(18*b^-1) = 0
4/3*b = 0 // : 4/3
b = 0
b in { 0}
b belongs to the empty set
| w/8-5=-1 | | 9+2j=-j | | 3(n-2)-(7-6n)=8 | | 3x+10+4x+-40=180 | | 1+9c=8c+8 | | p/4--9=5 | | j-0.9=2.8 | | 65=-5(-5+4x) | | x+(x*.2)=425 | | -1=-1.4+k | | log(3x+2)+log(x+3)=1 | | 6(3-4x)=-30 | | h-2=-2.5 | | 2=-6+w | | W=kt | | 5/x=20/24 | | -23/-3/4 | | -3f+8=-f | | k-0.7=2.9 | | 3k+40+2k=10 | | -2.8+4q=-0.8 | | 7x^2-8x+3-6x-12x^2= | | -5p+4(8p+2)=-30+8p | | 7/10=x/15 | | -12=-3/4-11 | | 12+-x=3x+12 | | 4(h+7)=3h-20+5h | | 3x+12=4(x+3) | | 2.1=y-3.4 | | x/o.2525=1.01 | | 9+4m=3m | | 7x+17+13x-13=180 |