如题所述
7878*89-8989*78
=78*89*(101-101)
=0
8.8*8又7/9+11又1/5*10+1又2/9/(5/44)
=(9-0.2)*79/9+(10+6/5)*10+11/9*44/5
=79-79/45+100+12 +11*44/45
=191+(484-79)/45
=191+405/45
=200
(0.375*1又4/5/6.3*5.4)/(2.7/2.1*1/8*3.6)
=3/8*9/5/6.3*5.4/(9/7*0.45)
=3/8*5.4/3.5/(4.05/7)
=3/8*54/35*7/4.05
=54*/(4*13.5)
=1
=78*89*(101-101)
=0
8.8*8又7/9+11又1/5*10+1又2/9/(5/44)
=(9-0.2)*79/9+(10+6/5)*10+11/9*44/5
=79-79/45+100+12 +11*44/45
=191+(484-79)/45
=191+405/45
=200
(0.375*1又4/5/6.3*5.4)/(2.7/2.1*1/8*3.6)
=3/8*9/5/6.3*5.4/(9/7*0.45)
=3/8*5.4/3.5/(4.05/7)
=3/8*54/35*7/4.05
=54*/(4*13.5)
=1
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