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)
5*k+9 = -41 // + 41
5*k+9+41 = 0
5*k+50 = 0 // - 50
5*k = -50 // : 5
k = -50/5
k = -10
k = -10
| -1/2-2m=-7/4 | | 5/8-7d=-199/40 | | -b+7=70/11 | | 3/4-4/7b=117/28 | | 7a+3/7=-438/7 | | 4/5b+2/3=6/5 | | -7w+1/6=-92/15 | | -a-2=-10 | | 3m+3/5=21/10 | | -1/5+a=59/5 | | 4k+4=6 | | 4-7w=34/5 | | 1/2+d=7/2 | | 13+(x-13)-(2-5)=2.8 | | -2/3+7m=187/3 | | 5t-7=-23/2 | | 5/7a+1/3=-128/21 | | -4/5-5n=164/45 | | 3/5+6w=-117/5 | | 1/7w+4=31/8 | | 2a+6=9-3a | | -6+3/5k=-42/5 | | -6+4/7w=-6 | | 7/8-5t=-73/8 | | 10-1/6k=79/8 | | 4a+6=94/11 | | 4/7x-1=-65/49 | | 1/2t+9=69/8 | | 6t-2=-2 | | 1/6x-8=-19/3 | | 2m+2/7=106/77 | | 2/3b+1=19/3 |