Помогите :а)3 целых 5/14*7/9-2 целых 3/14*7/9 б)4 целых 4/9*5/8+5/8*3целых5/9
А) 1) 3 5/17× 7/9= 47/18 2) 2 3/14×7/9 = 31/14×7/9= 31/18 3) 47/18 -31/18 =16/18= 8/9 б) 1) 4 4\9×5/8= 40/9×5/8 = 25/9 2)5/8× 3 5/9 = 5/8×32/9 = 20/9 3) 25/9 + 20/9 = 45/9 = 5