-4分之3x(8-1又3分之1-0.04)
=-3/4×8+3/4×4/3+3/4×0.04
=-6+1+0.03
=-4.97
9又19分之18x(-19)
=(10-1/19)×(-19)
=-10×19+1/19×19
= -190+1
=189
6.86x(-5)+6.86x(-12)+17x6.86
=6.86×(-5-12+17)
=6.86×0
=0
-4分之3x(8-1又3分之1-0.04)
=-3/4×8+3/4×4/3+3/4×0.04
=-6+1+0.03
=-4.97
9又19分之18x(-19)
=(10-1/19)×(-19)
=-10×19+1/19×19
= -190+1
=189
6.86x(-5)+6.86x(-12)+17x6.86
=6.86×(-5-12+17)
=6.86×0
=0