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)
18 = k+9 // - k+9
18-k-9 = 0
9-k = 0 // - 9
-k = -9 // * -1
k = 9
k = 9
| 8-5(4x+3)=2 | | -8=d-2 | | 1+b=-10 | | x-4(x-8)=3(x-5)+5 | | 3z+3=6y+3 | | b-4=-12 | | -5d=15 | | 8+m=9 | | -1=x-9 | | 10=b+5 | | b-9=-13 | | 5x+4x-9+1=-x-2x+9+7 | | 5/9(-6x+4)=-8 | | k-8=-14 | | 2+k=-10 | | -4+x=-3 | | t-7=0 | | 5=m-5 | | 7t=-70 | | 5(x+9)-3(x-7)=11(x+2)-10 | | 5(x+9)-3(x-7)=11(x+2)-1 | | 4=n+4 | | 7+m=7 | | a/3=-1 | | d/-2=-6 | | m/-7=-1 | | 8+k=10 | | 3x+18=2(x+18) | | 2(x+2)+4x=11-x | | 2x+3(x-1)=6(x-3)+13 | | 10+t=-2 | | 17=m+6 |