31 13/16+13 17/28= (43 7/9+45 3/8)-62 3/8=. Created by marysiabol. matematika-ru

8=...

July 2022 1 11 Report

31 13/16+13 17/28=
(43 7/9+45 3/8)-62 3/8=

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Nastya171167 31 13/16 + 13 17/28 = 509/16 + 381/28 =(509 × 7 + 381 × 4)/112 = (3563 + 1524)/112 = 5087/112 = 45 47/112
(43 7/9+45 3/8) - 62 3/8=26 7/9
1) 43 7/9 + 45 3/8 = 394/9 + 363/8 =(394 × 8 + 363 × 9)/72 = (3152 + 3267)/72 = 6419/72 = 89 11/72
2) 89 11/72 - 62 3/8 = 6419/72 - 499/8 =(6419 × 1 - 499 × 9)/72 = (6419 - 4491)/72 = 1928/72 = 241/9 = 26 7/9

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