1-9分之7/8分之7怎么样简算

问题描述:

1-9分之7/8分之7怎么样简算

1-7/9=2/9
再2/9除以7/8=2/9×8/7=16/63
直接算就好,简算反倒麻烦

=1-7/9×8/7
=1-8/9
=1/9

1-9分之7/8分之7
=1-7/9×8/7
=1-8/9
=1/9