Question

ПЖ СРОЧНО ДАЮ 19 БАЛІВ ОТДЮ ВСЕ ШО Є
є) 4 5\14 + ( 5 1\12 - 3 4\21)=

Answer 1

4 5/14 + (5 1/12 - 3 4/21) = 6 1/4
1) 5 1/12 - 3 4/21 = 61/12 - 67/21 = 427/84 - 268/84 = 159/84 = 1 75/84 = 1 25/28
2) 4 5/14 + 1 25/28 = 61/14 + 53/28 = 122/28 +53/28 = 175/28 = 6 7/28 = 6 1/4