1 3/5 * 2 4/7 + 2 4/7 * 1 1/10 - 1 7/10 * 1 4/7

Question

1 3/5 * 2 4/7 + 2 4/7 * 1 1/10 - 1 7/10 * 1 4/7

Answer 1

1 3\5 * 2 4\4 + 2 4\7 * 1 1\10 - 1 7\10 * 1 4\7 = 
8\5 * 18\7 + 18\17 * 11\10 - 17\10 * 11\7 = 
144\35 + 198\70 - 187\70 =
486\70 - 187\70 = 299\70 = 4 целых и 19\70

Comments

Зачет, спб)