Question

要简便运算

Answer 1

1、5/6-(1/2+1/3)
=5/6-(3/6+2/6)
=5/6-5/6
=0

2、7/6-5/12+1/6
=7/6+1/6-5/12
=8/6-5/12
=4/3-5/12
=16/12-5/12
=11/12

3、2/3+(1/2-1/4)
=2/3+(2/4-1/4)
=2/3+1/4
=8/12+3/12
=11/12

4、16/11-7/12+3/11-5/12-1/11

=(16+3-1)/11-(7+5)/12
=18/11-1
=7/11

5、15/28+(7/16-13/28)+9/16
=15/28-13/28+7/16+9/16
=2/28+1
=1/14+1
=15/14

6、5/9-1/2+5/6
=5/9-3/6+5/6
=5/9+2/6
=5/9+1/3
=5/9+3/9
=8/9

7、11/23-3/25+12/23-1/25
=11/23+12/23-3/25-1/25
=1-4/25
=21/25
望采纳，谢谢！