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)
15.7/x = 0.7 // - 0.7
15.7/x-0.7 = 0
15.7*x^-1 = 0.7 // : 15.7
x^-1 = 0.04458599
-1 < 0
1/(x^1) = 0.04458599 // * x^1
1 = 0.04458599*x^1 // : 0.04458599
22.42857005 = x^1
x = 22.42857005
x = 22.42857005
| 2x-4=3y+8 | | 3x+2-y=0 | | 2x-4+3y+8=5y+x+8 | | 9.25=-logx | | 720=3x+8y | | In(1+6x)=1673 | | 8p-40= | | 2x+4+2=x+10 | | 152.50=3x+8 | | 3.5+0.2p=6.1 | | -4(x+2)=x+2 | | 2(2x+2)=5(x+1) | | 152.50=8x+3 | | (M+2)(m-5)=0 | | 7(x+1)=5x+9 | | -2(r+5)=0 | | (1ab*3xy)-n= | | 4+5=3x | | (3x+4)=(x-5) | | 10/15=x/80 | | f(7)=2x+1 | | 7(y+2)=21 | | f(7)=2+1 | | 2/3v=2-43 | | -24-3r=9 | | x*2+9x+7=0 | | 2(d-6)=3d-1 | | 3/2p-2=-1 | | 2a=220-6y | | 1.5x-2=3 | | 50x^2-100xy+50y^2=0 | | X-(-12)=23 |