7 целых 8/15-(5 целых 7/10-4)

Question

7 целых 8/15-(5 целых 7/10-4)

Answer 1

7ц 8/15 - (5ц 7/10 - 4) = 5целых 5/6
1) 5ц 7/10 - 4 = 1ц. 7/10
2) 7ц 8/15 - 1ц. 7/10 = 113/15 - 17/10 = 226/30 - 51/30 = 175/30 = 5ц.25/30 = 5ц. 5/6