-117×(九分之四+十三分之八-三分之一)
=-117×(4/9+8/13-1/3)
=-117×4/9+(-117×8/13)+(-117)×(-1/3)
=-52+(-72)+39
=[(-52)+(-72)]+39
=-124+39
=-(124-39)
=-85
-4×(-三又五分之二)/(-3)×0
=0
(-3.6)/(-0.4)×(-三分之二)
=(-18/6)÷(-2/5)×(-2/3)
=(-18/5)×(-5/2)×(-2/3)
=-(18/5×5/2×2/3)
=-6
1-4×(-3)/(-三分之一)
=1-4×(-3)÷(-1/3)
=1-4×(-3)×(-3)
=1-4×3×3
=1-36
=-(36-1)
=-35
抱歉……第三题的负三分之二后面还有个三次方……我忘了加……能重新做一下吗
你好:重解第3题原式=(-18/5)÷(-2/5)×(-2/3)³=(-18/5)÷(-2/5)×(-8/27)=(-18/5)×(-5/2)×(-8/27)=-(18/5×5/2×8/27)=-8/3