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/10 = 8 // - 8
k/10-8 = 0
1/10*k-8 = 0 // + 8
1/10*k = 8 // : 1/10
k = 8/1/10
k = 80
k = 80
| 2x+2x+5=3x-x+14 | | 4+3=-1 | | 12=4/5+3 | | d-45=64 | | 4-6=2y-8y | | 4z+2=8z-8 | | 8z-8=4z+2 | | 10c+8c+15=-2c-40 | | 3z+1=25 | | x+2y+3z=6 | | 2y+7=y+9 | | 8m-1=8m+1 | | 3m+1=m-1 | | 3a+4=4 | | X-8=x-8 | | y=x-1+3 | | 245=7t | | 12n-9n=38-2 | | 7x-4v+12z+4=5-3v+7x-v+12z | | 3x-7=138 | | 8-w=12 | | 7x-27=x+57 | | 1/3y-5=13 | | 22s=154 | | x^2-20x+48=0 | | c-12=7639 | | 12p=78 | | x-4x+3=x+5 | | 1/4x-5=11 | | 5p-38=9p-6 | | 2x-8=3x | | 5-4z=9z+70 |