5/6w+21=-1/3 (2w-9).

I believe this question logically tells us to find the value of w. The two equations are already equated. Since there is 1 unknown and 1 equation, the system is solvable. The solution is as follows:

5 / (6w+21) = - 1/3 (2w - 9)

5 / (6w+21) = - 1 / (6w - 27)

Cross multiplying the terms:

5 (6w - 27) = - 1 (6w + 21)

30w - 135 = - 6w - 21

30w + 6w = - 21 + 135 = 114

36w = 114

w = 114/36

w = 19/6 or 3.167