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)
-35/x = -7 // + 7
7-35/x = 0
-35*x^-1 = -7 // : -35
x^-1 = 1/5
-1 < 0
1/(x^1) = 1/5 // * x^1
1 = 1/5*x^1 // : 1/5
5 = x^1
x = 5
x = 5
| 21x+6=17x+36 | | 3(6y^2-9+7x-2x^2-3x-6)= | | c/4+2=3 | | 26x+29=16x+41 | | 2a=3b+5 | | 8x^2+3x+9-x^2+7x-2+y= | | 100/P=0,5Y-50i | | Y=120+0,8*(Y-500)+300+400-40i+(-10*((1*2)/1)+300)-0,2Y | | 18x-7x=55 | | Z=120+0,8*(Y-500)+300+400-40i+(-10*((1*2)/1)+300)-0,2Y | | 7(x+2)=5(x+6) | | 7x+3=4x+21 | | a/3+2=9 | | x-56=56 | | 2x(3x+2)-3x(4x+2)= | | 4(x-2)=12-x | | 6n-3=4+n | | 6x+16y-135=0 | | r+r^3+r^4+r^5=4.5 | | r+r^3+r^4+r^5= | | 9(-3+135)+-12y= | | 36y+-12y=24y | | 85-3x=13-9x | | 4x-2x-4=0 | | 3x-45x=0 | | (p+8)/-2=10 | | 21/36=16/36 | | 6x+4y=700 | | 2(2x+6)=4x+4 | | 5x-(4x+5)=2 | | -3+3x=4x-15 | | 2y+13+14,5=41-3y+4,5+y |