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)
37 = 130/x // - 130/x
37-(130/x) = 0
37-130*x^-1 = 0
-130*x^-1 = -37 // : -130
x^-1 = 37/130
-1 < 0
1/(x^1) = 37/130 // * x^1
1 = 37/130*x^1 // : 37/130
130/37 = x^1
x = 130/37
x = 130/37
| 28-9x=3 | | -7f+6=166+3f | | 2x-(13)=3 | | 2/3x^2-1/3=0 | | z=2z-70 | | (4x)(-3xy^2)= | | (4x+9)-(x+9)=33 | | -(12-x)=4 | | 3x+2(6x-4)=52 | | 3x+20=8x-4 | | x^2=22+3x | | -5c-12/4=2 | | 4x+5(-5x+9)=171 | | (3x-5)+(3x+5)=180 | | 9(3x+10)-20x=2x+115 | | -6j+7=8j-16j-13 | | m/16-3=(-2) | | 4a/3=10 | | -8(p+2)+p=4(p+3)+5 | | 5x+7=50 | | -x-14=1 | | 3y+8y-19=17+5y | | 10/60=x/100 | | 12-2(4x-5)=-2 | | 35=6v-5+4v | | 6(2x-1)+2(x+11)=2 | | X/x^4/24 | | (5x/2)-9=(2x-7/6) | | 0=3(2x+4) | | y=-3.5x-4.5 | | 6u-4u=10 | | 198=5x+3(-7x+2) |