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)
k/6+(2*k)/3 = -5/2 // + -5/2
k/6+(2*k)/3-(-5/2) = 0
k/6+(2*k)/3+5/2 = 0
5/6*k+5/2 = 0 // - 5/2
5/6*k = -5/2 // : 5/6
k = -5/2/5/6
k = -3
k = -3
| 2-4x=2(1-2x) | | -12x-67=4x+45 | | 7x+91=3x-57 | | 30p^4q-45p^3q^2+15p^2q^3/5p^2q | | -36+12x=x+129 | | 20/x=1.5 | | -54+12x=-7x+41 | | 2x-16=-x+8 | | -40-12x=x+129 | | 16x-9=13-6x | | 3(x+4)2-72=0 | | -69-5x=3x+107 | | -163-8x=3x+46 | | 3x+4-x=20 | | -5x-30=3x+26 | | 11x-7y=5 | | -25x^2-100=0 | | 6.4t+1.47=-8.77 | | 6*2.5=x*10 | | 5+3y=64 | | x^2-44x+476=0 | | -5x+2y=12 | | x^2-44x+488=0 | | 212-7x=38x+17 | | 2-8t+2=-9t+16 | | 127-5x=3x+22 | | 5(x+6)=5x+30 | | 7+2u=-1 | | 6x+7x-5=0 | | 2x+14=50-2 | | 9xZ-16yi+18x+32y-119=O | | 4/9/(11/3-5)=1/6 |