(1/2+1⅜)×3целых 6/7
1) 1/2 + 1 3/8 = 4/8 + 1 3/8 = 1 7/8 2) 1 7/8 • 3 6/7 = 15/8 • 27/7 = 405/56 = 7 13/56 Ответ 7 13/56