1/3h-4 (2/3h-3) = 2-3h-6

If you would like to solve the equation above, you can do it this way:

1/3 * h - 4 * (2/3 * h - 3) = 2 - 3 * h - 6

1/3 * h - 8/3 * h + 12 = - 4 - 3 * h

-7/3 * h + 3 * h = - 4 - 12

-7/3 * h + 9/3 * h = - 16

2/3 * h = - 16

h = - 16*3/2

h = - 24

The result is - 24.