Question

能简算的要简算。怎么算？ 8/9+7/12+3/4= 2/3-（1/5+1/6）= 1-5/15-

能简算的要简算。怎么算？
8/9+7/12+3/4=
2/3-（1/5+1/6）=
1-5/15-2/5=
5/6-5/12-7/18=
6/11+8/13+5/11=
2-8/15-7/15=
要写过程！😊

Answer 1

8/9+7/12+3/4
=32/36+21/36+27/36
=53/36+27/36
=20/9

追答

2/3-(1/5+1/6)
=2/3-1/6-1/5
=1/2-1/5
=3/10

1-5/15-2/5
=10/15-2/5
=4/15

5/6-5/12-7/18
=30/36-15/36-14/36
=15/36-14/36
=1/36

6/11+8/13+5/11
=6/11+5/11+8/13
=1+8/13
=21/13

2-8/15-7/15
=2-(8/15+7/15)
=2-1
=l