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)
6*k-(2/5) = 208/5 // - 208/5
6*k-(2/5)-(208/5) = 0
6*k-2/5-208/5 = 0
6*k-42 = 0 // + 42
6*k = 42 // : 6
k = 42/6
k = 7
k = 7
| -n+5/8=13/8 | | 21overp+1=8 | | 12x^3/4x | | 6d+5=-55 | | -3(x)=-3x+2 | | 2x-5=18/6+8 | | -8/9+3t=73/9 | | 4/5x-7=-27/5 | | 1/3d-5/8=-37/40 | | -1/2-6w=29/14 | | -1/9-x=-82/9 | | 4d+9=23/3 | | -2x^2-9x+1=-x^2-2x-4 | | d+8=50/7 | | 7/9+m=-74/9 | | 3b+4=41/8 | | 5-d=5 | | 1-5k=-19 | | 2/7+6a=199/35 | | 4a-1/3=-43/21 | | -2/5(10x-15y) | | 1+k=7/6 | | -7d+2/3=-17/6 | | -5/6x+4/7=248/189 | | 4/5x-8/5=-16/5 | | 2-3/7x=17/7 | | 8+1/3b=22/3 | | 7/8+5d=-33/8 | | -13=-2x+1 | | 4x^2+x+2=-7x+7 | | ln(x-4)-ln(x+3)=2 | | 3.6M-6=26.2-M |