If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( i )
9*i+7 = 0
9*i+7 = 0
9*i+7 = 0
9*i+7 = 0 // - 7
9*i = -7 // : 9
i = -7/9
i in (-oo:-7/9) U (-7/9:+oo)
(2*i+5)/(9*i+7) = 0
2*i+5 = 0 // - 5
2*i = -5 // : 2
i = -5/2
i = -5/2
| 7x^3-2xy+10x-7x=0 | | 3r^2=5r+2 | | 27=5a-6a-6a | | 12(3z+5)-5= | | 6(4x*9)=42 | | 43x-57x=28 | | 1000*10=k | | 36+4n=12 | | 2/5h-7=12/5-2h+3 | | (2n+3)/4=(5n-1)/6 | | 100a+123-5a=1234567 | | 4(6x)=10x | | 49n^2-35n=-4 | | 6(4x+9)=42 | | 4lnx-6=12 | | 5x^2+14=-17x | | 34*4= | | 27/8/9/40 | | 8x-6=12x+30 | | 4(6x)=24x | | 2m^2=56+9m | | 4(-6+x)=5x-1/2 | | p=x+(2x-3)+(5x-4) | | 2d-5=17 | | x=2u/g | | 4(6x+9)=42 | | 4(6x+9)+x=42 | | 2b-4c=12 | | 2(x-8)=3(x+7) | | 4/3r+7/5r | | y=5(1)-4 | | 28.3x*.10=2.83 |