If it's not what You are looking for type in the equation solver your own equation and let us solve it.
k in (-oo:+oo)
(1*k)/(-2) > 2 // - 2
(1*k)/(-2)-2 > 0
k/(-2)-2 > 0
-1/2*k-2 > 0 // + 2
-1/2*k > 2 // : -1/2
k < 2/(-1/2)
k < -4
k in (-oo:-4)
(-oo:-4)
| =12a-(-(-2a+b)+3b)+(4a-7b) | | =2m-(-3m-4n)+(-5m-6n) | | Cos(4x)-3cos(2x)=4 | | 2a-17=7 | | 2x-(5-3x)=10 | | 27/3^2/6-3-(-2) | | 1+1+1+1+1+0=5 | | 2x^2-(3+7i)x+(9i-3)=0 | | x^2+16x+64-y^2=0 | | a(28-9b)=0 | | 81a^14-18a^7b+1b^2-64c^6=0 | | 3x/2-2=1 | | 2x-6x+6=2x+36 | | 5*4/2 | | x-5/5=-6-2x/3 | | 3x=5*2 | | 2(2n+2n)=8 | | 13=-7-4x | | 3+2(5n+2)-n= | | 0.6x+0.5=2.5 | | -x/8=7/4 | | 7d+-10=25 | | 6x/x-1+18/x-12=6 | | 8+3(4n+5)-n= | | -40=8g+-88 | | 1/5(20-10x)+3=-4+9/2x | | 6x+8=11x | | 2y-0.8=0.6 | | x^3-x^2-12x=37 | | (x^2y+x)dy+(xy^2-y)dx=0 | | 1.5w+5=-7 | | x+39=-37 |