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/(-3) = 5 // - 5
k/(-3)-5 = 0
-1/3*k-5 = 0 // + 5
-1/3*k = 5 // : -1/3
k = 5/(-1/3)
k = -15
k = -15
| b+3=8 | | -8+m=-10 | | -3=k-10 | | 7+a=5 | | -10=w-6 | | -3+24n+4=97 | | 7+w=3 | | 10x^2+6x+5=0 | | t/5=-4 | | n+1=-9 | | 17=m+10 | | -3+b=-3 | | -6+k=-5 | | 1+b=-7 | | 2+d=-6 | | m-3=-3 | | 6x^2+32x=0 | | 10x+y=11 | | 55-8y=7-24 | | w/-4=-6 | | w/-7=-5 | | 4m=-48 | | 9=b+5 | | k-8=-12 | | -11=a-4 | | 5a-2(a+3)=0 | | b-8=-2 | | 6+d=8 | | 16=d+5 | | t+8=16 | | n+1=-10 | | d-3=-9 |