Помогите 4-5)))))))))

Question

Помогите 4-5)))))))))

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Answer 1

4)
а)
15 3/4 - 6 4/11 + 7 1/2 = 45/4 - 24/11 + 7/2 = 495 - 96 + 154/44 = 553/44
б) 
2 + 8 7/12 - 5 5/6 = 2 + 2 7/3 - 25/6 = 2 + 14/3 - 25/6 = 5/2 
5) 
14 3 /11 - 5 3/7 > 3 3/7