22 (а,г) и 24 (а,г)
А) х + 1/8 = 1/2 1/2 = 4/8 х = 3/8 Г) 7/10 - х = 1/2 1/2 = 5/10 х = 2/10 = 1/5 А) 4*3/28 = 4/1 * 3/28 = 12/28 = 6/14 = 3/7 Г) 1,3/7 = 10/7 2,4/5 = 14/5 10/7 * 14/5 = 140/35 = 28/7 = 4
Спасибо!)