If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
7-(9/x) = 9 // - 9
7-(9/x)-9 = 0
7-9*x^-1-9 = 0
-9*x^-1 = 2 // : -9
x^-1 = -2/9
-1 < 0
1/(x^1) = -2/9 // * x^1
1 = -2/9*x^1 // : -2/9
-9/2 = x^1
x = -9/2
x = -9/2
| -8x-35=-x | | 1+5x=12.6 | | 7/3/-5 | | 11-2x=25 | | 3(4-5x)=-10x+5-12x | | 10+10x-10=15x-5x+90 | | 22/33= | | 2n+3n+11+19=180 | | 6x+5-3x=7(x-1) | | 144=-9(n-10) | | 12(6-2)-1.5=46.5 | | Y=7.75x+22 | | 5x+74=-6 | | 5x+45-24x=-59 | | 0.7(x+100)=0.75x-315 | | 4(8x-3)=14+6x | | 4(p-1)= | | 8y-6y=16 | | -5m+28-5(m-2)=7m-(6m-9)-4m+1 | | 40-2x=-8(7+6x)+4 | | x^2+3x-1.75=0 | | 2.5t-1=3+1.5t | | 4t-6=9-t | | 37-2(x+8)=1 | | -.33x=10 | | -3(x-9)+4/4=-10 | | f(-x)=4x^2+5x+2 | | 46+x=82+64 | | -7p-6(3-2p)=2(p-6)-18 | | z+9= | | P=a-(n-1)b | | 12x+4+2x=3 |