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People's education edition, the first volume of junior high school mathematics, the answer on page 38
Review consolidation exercises 1.4

1.( 1)56(2)-60(3)- 1. 16(4)-6. 1(5)-0. 1(6)6

2.( 1)-2/9(2) 1/4(3)- 170/3(4)3/7

3.( 1)- 1/ 15(2)-9/5(3)-4(4) 100/ 17(5)4/ 17(6)-5/27

4.( 1)-7(2)4(3)- 16/3(4)3(5)-4/5(6)-2/3

5.-5; - 1/5; -4; 6; 5; 1/5; -6; four

6.( 1)-3(2)- 1/ 12(3)27/4(4)20

7.( 1)24(2)-2 10(3) 16/5(4) 100(5)- 1/2(6)33/28(7)0(8)- 1 1

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