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The answer to the sixth grade math book (PEP).
90 pages: 1 100: 929 1 333:11400 3: 4.

45:34/35

3: 1=3 6:2=3 3:=6:2

A disproportionate real proportion is an inversely proportional real proportion.

4 9 1=x to 5.4

5 10:350=8:X

Page 95

5 8 species

6 Wang Gong Li

7 1, 3,2 is good, 1, 4,2,3 is good, 3 is good.

100 page

6 30/2= 15

7 12.4/( 1+ 1)=6 7.2/( 1+ 1)=3 3*6= 18

10 1 page

10 24/4 = 6 6/(5+4+3) = 21length =2 1*5 width =2 1*4 height =2 1*3.

1 1 lower left face 12 (1)F plane C plane length, width and height.

That's all I know. I hope you can adopt it.