(九分之二十二-十分之十一)*十一分之九

问题描述:

(九分之二十二-十分之十一)*十一分之九

(九分之二十二-十分之十一)*十一分之九
=(220/90-99/90)*9/11
=121/99*9/11
=1

(22/9-11/10)*9/11
=22/9*9/11-11/10*9/11
=22/11-9/10
=11/10

[(22/9)-(11/10)]*(9/11)
解,得:
==(22/9)*(9/11)-(11/10)*(9/11)
==(22/11)-(9/10)
==2-(9/10)
==11/10
==1.1

(22/9-11/10)×9/11
=22/9×9/11-11/10×9/11
=2-9/10
=1又1/10

(22/9 - 11/10) x 9/11
=22/9 x 9/11 -11/10 x9/11
=2- 9/10
=11/10

(22/9-11/10)*9/11
=(22/9)*(9/11)-(11/10)*(9/11)
=2-9/10
=(20-9)/10
=11/10