а) 7/4 * 8/15 = 56/60 = 14/15
б) 6/30 * 15/18 = 90/540 = 1/6
в) 8/27 * 9/6 = 72/162 = 4/9
г) 35/30 * 42/49 = 1470/1470 = 1
а) 7/4 * 8/15 = 56/60 = 14/15
б) 6/30 * 15/18 = 90/540 = 1/6
в) 8/27 * 9/6 = 72/162 = 4/9
г) 35/30 * 42/49 = 1470/1470 = 1