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)
-17/30 = k-(9/10) // - k-(9/10)
9/10-k-17/30 = 0
1/3-k = 0 // - 1/3
-k = -1/3 // * -1
k = 1/3
k = 1/3
| n+2/3=5/6 | | k+1/2=-23/2 | | 1/5+t=21/5 | | x-2=-11/6 | | m/-6=-2 | | 5+w=27/5 | | x+6=69/10 | | 1/5+b=-17/40 | | w+6/7=115/77 | | d+4=48/11 | | a+2/7=-33/7 | | w-2=-11/4 | | b-2/3=7/30 | | 5/7a=-60/7 | | t+4/9=40/9 | | -3/2=k-1 | | 12=t+5 | | 4=m+6 | | b-9=-10 | | d-4/5=16/5 | | b/2=-4 | | d+8=101/12 | | 32/9=x+5/9 | | -1/2=x-1 | | a-6/7=-10/77 | | 7+n=67/11 | | 13/8=d+2 | | 10+x=10 | | 3/5+x=-12/5 | | w+2=7 | | 7/10=w-3/10 | | -2/7t=24/7 |