If it's not what You are looking for type in the equation solver your own equation and let us solve it.
n in (-oo:+oo)
2-(((3*n)/4)*n) = (3*n)/6 // - (3*n)/6
2-(((3*n)/4)*n)-((3*n)/6) = 0
(-3/4)*n^2+(-1/2)*n+2 = 0
2-3/4*n^2-1/2*n = 0
DELTA = (-1/2)^2-(-3/4*2*4)
DELTA = 25/4
DELTA > 0
n = ((25/4)^(1/2)+1/2)/(-3/4*2) or n = (1/2-(25/4)^(1/2))/(-3/4*2)
n = -2 or n = 4/3
n in { -2, 4/3 }
| 4/x^2-9-4+20 | | 5(2a-3)+2a+3=0 | | 5*a=8-a | | 4x-5x+7=17+9x | | 6+4x=3x-3 | | 4x-4=3x-2 | | 7x-21=5x-9 | | 12y/1/2 | | 13+2x=3+6x | | -19x=-8x+22 | | 8(2c-1)=40 | | 42/52=x/365 | | 42x/52=x/365 | | 4(5b-10)=990 | | 3g+5/2=4-g | | S=pirL+pir^2 | | -27=7c+3c-c | | 7y+y=-24 | | 3a-a+4a=18 | | e(12)=2n | | 16=-4x-4 | | 3x+8+2x=17 | | 8=4-4 | | -3x+165=2x | | 0=2+7 | | 1/5(3x^2-10)12x | | 5/2n=8/3n-24 | | 2x-12=42 | | 2x^2=3-5x | | 161/28 | | -4.9t^2+30t+1.5=0 | | y=-x/2 |