Each equation in this problem set is in the form of 2/3 * x = 24. You can solve by "multiplying by the reciprocal". A reminder: reciprocals are 2/3 & 3/2 and 1/5 & 5/1. To make a reciprocal of a fraction you 'flip the fraction'.
Solve 3/5 * x = 33 (3/5) * (5/3) * x = 33 * (5/3) which becomes x = 165/3 which becomes x = 55.
Solve 1/8 * x = 8 (1/8) * (8/1) = 8 * (8/1) which becomes x = 64.
Solve 4/9 * x = 4 (4/9) * (9/4) * x = 4 * (9/4) which becomes x = 36/4 which becomes x = 9.
For each problem in this problem set you will need to solve each equation. Strive to be able to accomplish each problem with ease and then strive for increasing your speed. Good luck and enjoy the challenge!