Answer :
8d - 1/3(6 - 9d) = 42 |use distributive property: a(b - c) = ab - ac
8d - 2 + 3d = 42
11d - 2 = 42 |add 2 to both sides
11d = 44 |divide both sides by 11
d = 4
8d - 2 + 3d = 42
11d - 2 = 42 |add 2 to both sides
11d = 44 |divide both sides by 11
d = 4