3 15 2 30 July 8, 2019 16 32 64 128 3 10 2 15 net 30 meaning 3 10 2 15 n 30 15 2x 3 2 )+ 30 3 10 2 15 net 30 2 15 to 3 30 how many hours 1 5x 2 3 15 )= 30 1 3 2 15 và 17 30 3 5 x 2 15 7 30 2 15 to 3 30 time 15 x 2 30 3 7