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)
(3/5)/x = 2/0.7 // - 2/0.7
(3/5)/x-(2/0.7) = 0
(3/5)/x-2.85714286 = 0
3/5*x^-1 = 2.85714286 // : 3/5
x^-1 = 4.76190477
-1 < 0
1/(x^1) = 4.76190477 // * x^1
1 = 4.76190477*x^1 // : 4.76190477
0.21 = x^1
x = 0.21
x = 0.21
| 3x/4-2=6 | | 3a+b-4=0 | | y=-1.636+0.793(3.2)+0.004(550)-0.0009(590)+0.0009(65) | | 4t(t+13)= | | -2x-5(-3)=3 | | X-2=3y-4 | | 2(x-8)-3x=6-3(x+4) | | y=-1.636+0.793(2.9)+0.004(560)-0.0009(540)+0.009(55) | | -2-5(-3)=3 | | 10/10x-7/10x=2700000 | | (2-3i)-(7-5i)= | | y=9.8+(-0.10)(10) | | 7x=10+3x-x+2 | | -7(-1-4x)=15 | | D-7=72 | | 1.5(y-6)=8.8-y | | 2268=x/100(3927) | | 3(-1.5-2.5y)+8y=-6 | | -0.507(7000)+0.5x=0.03(7000+x) | | x^2+y^2-4x+36y+72=0 | | -5(2x-3)=-14 | | 18x^2y-15xy^2-21xy=0 | | y/-5=5-(-) | | 9x+24-67=99-1x | | 4/11/3=3/x | | 44x^2y+34xy^2+42xy=0 | | 10(5+2x)=40 | | x^5-2x^3+x^4-4x^2+4=0 | | 2x+10x-x+6=x-2 | | 10T+5T^4=80 | | 3x/-4=3/2 | | 4*cos^2x-1=0 |