1) 3 7/9 * 1 5/17 = 34/9 * 22/17 = (34 * 22)/(9 * 17) = 44/9 = 4 8/9
2) 7 1/2 * 2 4/15 = 15/2 * 34/15 = (15 * 34)/(2 * 15) = 34/2 = 17
3) 9/10 * 1 1/9 = 9/10 * 10/9 = ( 9 * 10) /(10 * 9) = 1
1) 3 7/9 * 1 5/17 = 34/9 * 22/17 = (34 * 22)/(9 * 17) = 44/9 = 4 8/9
2) 7 1/2 * 2 4/15 = 15/2 * 34/15 = (15 * 34)/(2 * 15) = 34/2 = 17
3) 9/10 * 1 1/9 = 9/10 * 10/9 = ( 9 * 10) /(10 * 9) = 1