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)
4/x = 48/36 // - 48/36
4/x-(48/36) = 0
4/x-4/3 = 0
4*x^-1 = 4/3 // : 4
x^-1 = 1/3
-1 < 0
1/(x^1) = 1/3 // * x^1
1 = 1/3*x^1 // : 1/3
3 = x^1
x = 3
x = 3
| x/25=30/50 | | 30/50=x/36 | | 9/y-1/3=1/6 | | (11x-2)+(9x+1)=(19x+3) | | n/77=7/11 | | 2*x^3+9*x^2-30*x+96=0 | | 24k^2+88k+64=0 | | (2.8)(2.8)= | | n/77=2/11 | | 2x^3+9x^2-30x+96=0 | | 12/7=x/28 | | p=6-0.5q | | 12x^2-26x+10=10 | | 6x+301=5(3x-1) | | 12x^2+26x+10=10 | | 12x^2+26x+10=à | | 7/12=35/c | | 0=6-0.5q | | (9x-8)+(x+10)+(x-2)=180 | | 3y-13=2+8y | | 2x+26=56 | | 7/12=36/c | | x+8.25=36.97 | | 4t-16=-22+t | | 4/9*4/9 | | 42/v=7/4 | | 30.5=y-49.1 | | 12000=42v+4608 | | 4x-5y=x+2y+10 | | 11/5=x/30 | | x+(X+22)=56 | | 12000=42v-4608 |