If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
5*x-((5/6)*x^2) = (10/6)*x^2+2*x // - (10/6)*x^2+2*x
5*x-((5/6)*x^2)-((10/6)*x^2)-(2*x) = 0
(-5/6)*x^2+(-5/3)*x^2+5*x-2*x = 0
3*x-5/2*x^2 = 0
DELTA = 3^2-(-5/2*0*4)
DELTA = 9
DELTA > 0
x = (9^(1/2)-3)/(-5/2*2) or x = (-9^(1/2)-3)/(-5/2*2)
x = 0 or x = 6/5
x in { 0, 6/5 }
| 6k+4=3k+16 | | 3x-45=-6 | | 8h+4(h+5)=h+7 | | 4+1/2x=12 | | 12+17n=-42 | | 90=4x-3+5x+39 | | a*a*a*a*a*a*a+b*b*b*b= | | 27x+28=20x+42 | | -2/3(6-3k)=20 | | 10x^2=6x | | MX+2=7-NX | | (11x-1)+(2y+5)=180 | | 49w^2-5=-1 | | -7(x+2)-11=34+4 | | 1/2(n+4)=2/5n+1/10 | | M+m=8 | | 107=4x+27+9x-115 | | (2/7x)+(3/10y)-1 | | 9(v+3)-3v=3(2v+4)-20 | | -5x+12x-3x= | | 36-7=9/14+n | | 6+3(7x+5)=0 | | 3/4x-6+x | | 15a^2+7=50a+7 | | 28y=3(9y-6) | | 20(1-2y)-30y=-50 | | 6y+4-3y=5+y+17 | | -2x=155-(-45) | | -9-8x=-2(7+4x) | | 7t=80+7t | | 4(2t-5)=40-4t | | 6x+2=x+12 |