6.73-二又十七分之八+(3.27-一又十七分之九)求簡便運算

6.73-二又十七分之八+(3.27-一又十七分之九)求簡便運算


把括弧拆了,6.73和3.27配一塊,剩下倆配一塊



9/7-(9/13+2/7)-4/13 0.75*3/17+3/4*14/17簡算哇.答的好的有獎賞哇.


9/7-(9/13+2/7)-4/13
=9/7-2/7-9/13-4/13
=1-1
=0
0.75*3/17+3/4*14/17
=0.75*(3/17+14/17)
=0.75*1
=0.75