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/x = 2/5 // - 2/5
3/x-(2/5) = 0
3/x-2/5 = 0
3*x^-1 = 2/5 // : 3
x^-1 = 2/15
-1 < 0
1/(x^1) = 2/15 // * x^1
1 = 2/15*x^1 // : 2/15
15/2 = x^1
x = 15/2
x = 15/2
| 2x-16+4x=6x-12-4 | | 3c-14=17-c | | -6(-m-6)=84 | | 10x-4(x-6)=6x-4 | | 4x+5=1x+15 | | I-1.5=37 | | 20a^3b^3+5a^2b-15a^2b^2= | | 32=15+r | | y^2-15y+49=0 | | -12=7x+3(x+12) | | 8+11z-1=9z+63-6z | | 4y+9x=-36 | | -4-x=-9 | | -x+5+15x=-4+5x+27 | | -16x=-144 | | 1x+3x+12=20 | | -7(n-5)=3(n+5) | | x+2(3x-7)=21 | | 0.50x+0.45(70)=32.5 | | 6x+1=9-2x | | 3/4t+1/8+3/4(t+8) | | -8(x-5)+42= | | -4/7+1/3-9/14 | | -0.25=v/20 | | 3(2-3k)=33 | | 80+6w=145 | | 5(1-8x)=245 | | 4p+9=14 | | 9+6(19-4m)= | | 3(b+4)-2=2(b-1) | | 3(b+4)-2=(b-1) | | 45b+27=56b+72 |