If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
b-((4-a+5)/b) = 0
(-1*(9-a))/b+b = 0
(-1*(9-a))/b+(b^2)/b = 0
b^2-1*(9-a) = 0
a+b^2-9 = 0
(a+b^2-9)/b = 0
(a+b^2-9)/b = 0 // * b
a+b^2-9 = 0
x belongs to the empty set
| (x/4)+(2x/x+4)=2 | | 4x^2-25x+42=0 | | 6y-5x=30 | | 4x+12=7x+27 | | -3x-13=-25 | | 3(3x+5)=42 | | 3(4x-5)=5x+48 | | 3(4x-4)=5x+48 | | -2a=-16 | | 8z-34=7z | | 1-y=-5 | | 2-y=-5 | | z+4(z+3)=-18 | | 4z-6=18 | | 125^1/3 | | 4y+5x=-20 | | 6p+v=11 | | (2/3x-4)-(5/x+4) | | 2y+9=5 | | x^4+3x^2=70 | | x^2+x+13/2=0 | | 2/5+3/7x14/9 | | 99-4y=-36 | | -2x^2+12x-18=0 | | 2(y+3)-5=5y-3(1+y) | | -15-12x=123 | | 99-4y=36 | | (7w+3)(4w-12)=0 | | 3p^2-17p-28=0 | | 4k^2-12k+5=0 | | 8x+16=4(x-18) | | 105/21/4 |