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)
7*k-3 = -19/4 // + -19/4
7*k-(-19/4)-3 = 0
7*k+19/4-3 = 0
7*k+7/4 = 0 // - 7/4
7*k = -7/4 // : 7
k = -7/4/7
k = -1/4
k = -1/4
| 6d+1/2=-53/14 | | 3/5n+5=97/20 | | 5w+2/5=91/40 | | 5-3/5w=19/5 | | 6/7+5w=-64/7 | | -7m+10=59 | | -7k-9=-20/3 | | 6+3/7a=45/7 | | -6w+3=9 | | 1+3/5a=44/35 | | 3/5n-3=-6 | | -5/6m+1/5=77/135 | | 7/9+2/7n=47/63 | | 2/3b-2/5=-28/45 | | 7x-5=-3/2 | | 1+6m=5 | | -5w+9=-1 | | -6+4n=-18/5 | | 14=3(y+2)-(y-4) | | -1/3m-1/2=-5/6 | | -4/7a+9/10=41/90 | | 6k-2/3=-92/3 | | -1/5+1/6x=-7/60 | | -1/4+4/7x=-151/28 | | -3/10+6n=297/10 | | -6a-2/9=-29/9 | | 8-1/6x=26/3 | | 9/10+3x=29/10 | | 4/5a-3/4=113/20 | | -6n-4/5=-4/5 | | -3/4b+5=7/2 | | 6a+2=62 |