If it's not what You are looking for type in the equation solver your own equation and let us solve it.
b in (-oo:+oo)
(-2*b)/(-19) = -2/(-9) // + -2/(-9)
(-2*b)/(-19)-(-2/(-9)) = 0
(-2*b)/(-19)-2/9 = 0
2/19*b-2/9 = 0 // + 2/9
2/19*b = 2/9 // : 2/19
b = 2/9/2/19
b = 19/9
b = 19/9
| X^2+2xy+y^2+x-y=0 | | 8=-3(-3x+1)+2x | | a+x+8=r | | 4b+3c=22 | | 6+x+5=n | | 3(-3x-5)-4=-46 | | 5a+8c=-38 | | a+x=c | | 10g-2=3 | | (X-10)=20 | | sin(55)=x/10 | | x+r=10 | | 5x-3+2y=8-10 | | 9x-5=-67 | | 2(6v-7)=-98 | | 9x-5=567 | | 8/9k=-13 | | 1.2(x-2)=2-6 | | p+p+p+65=80 | | 0=160+48t-16t^2 | | 5(6a+2)=100 | | 3(4w-11)=99 | | x+6=n | | 0=160+48t-16t*2 | | B-8.39/-4=-1.56 | | 4y=x-24 | | 6(1+6k)=222 | | 3-3a=2(a-1) | | Log(-2x)-log(x-20)=2 | | ln(x+4)-ln(12-x)=0 | | 5.2=1.4(n-3)-6 | | -6(m+10)+8=-m-2(8m+4) |