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)
700/x = 5/8 // - 5/8
700/x-(5/8) = 0
700/x-5/8 = 0
700*x^-1 = 5/8 // : 700
x^-1 = 1/1120
-1 < 0
1/(x^1) = 1/1120 // * x^1
1 = 1/1120*x^1 // : 1/1120
1120 = x^1
x = 1120
x = 1120
| (2w+12)/9-(2w+3)/2=(2w-11)/6 | | 9-4(c-3)=1 | | (5x+15)(5x-5)=0 | | 5/9v+w=2 | | 5x+7y=11 | | 9.1/14.6 | | x^2-3.3-0.7=0 | | (22b-2)-7(3b+1)=-5 | | 3(p-6)=3 | | 9a^2-24ad+16d=3a(3a-8d+16d) | | 14.6-5.5= | | z+6=2z/4 | | 5w+w^2-42=0 | | 3(2x-5)+4x=85 | | x^2+25x-70=0 | | z^4-3z^2-10=0 | | 6=a/4+4 | | 2*(x+1)+5=7 | | 6x+6x+3+9=6x+5+5x | | R=2/3t+v | | 2.6y+9.4=4.6y-2.3 | | -4y+9=-5y | | 5x=-y-8 | | r=3m+zr+5h | | 9r^3/2r^2 | | 2x^2+2x-840=0 | | (y+5)/2-(3y-1)/4=(6-5y)/6 | | 3/2v=30 | | -3=x-18 | | 1/3x+11=-1 | | 8(x-3)^2/4(x-3)(x+3) | | 4z+2-3z+5=3+z+4 |