Question

学霸，帮忙

Answer 1

8、b*c，a*b*c*d
9、15,7
10、1，6
11、1/5，0.8
12、7,，1，3

请采纳！！！

Answer 2

7: (3/10 6/5) (3/10 7/28 54/36)
8: (b*c) (a*b*c*d)
9: (15) (8)
10: (1) (6)
11: (1/5) (4/5)
12: (27,37,41,61,73,83,95) (58) (37,41,61,73,83) (27,58,95)