Question

计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4-5/8 4/5-（3/10+1/6） 5/9+7/

Answer 1

5/6-1/2+1/4

=5/6-1/4

=10/12-3/12;

=7/12;

5/12+3/4-5/8

=10/24+18/24-15/24

=13/24;

4/5-（3/10+1/6）

=24/30-9/30-5/30

=10/30

=1/3;

5/9+7/18+4/9

=(5/9+4/9)+7/18

=1+7/18

=25/18;

1-2/7-5/7

=1-(2/7+5/7)

=1-1

=0

2/3+5/13+1/3

=1+5/13

=18/13;

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