To solve the first equation, (x-6)=8, you first add 6 to both sides to isolate the variable:

x - 6 + 6 = 8 + 6
x = 14

To solve the second equation, 5.6 / (-x) = 8, you first multiply both sides by -1 to make it easier to solve:

-5.6 = 8x

Then divide both sides by 8:

x = -5.6 / 8
x = -0.7