1-9分之8×8分之3×7分之1

2025-12-25 08:28:19
推荐回答(2个)
回答1:

1-8/9x3/8x1/7
=1-1/3x1/7
=1-1/21
=20/21

回答2:

1-9分之8×8分之3×7分之1
=1-3分之1×7分之1
=1-21分之1
=21分之20