Помогите пж даю 15балов

Question

Помогите пж даю 15балов

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Answer 1

6-4 8/15= 5 15/15 - 4 8/15= 17/15
5 4/10- 2 1/3=3 2/30
7 6/10- 4 -3/4= 2 4/10 - 3/4 = -2 28/40.