42乘(负三分之二)加(负四分之三)除(-0.25)怎么算

2024-12-26 09:25:14
推荐回答(3个)
回答1:

解:原式=42×(-2/3)+(-3/4)÷(-0.25)
=-(42×2/3)+(-3/4)÷(-1/4)
=-28+(-3/4)×(-4)
=-28+(3/4×4)
=-28+3
=-(28-3)
= -25

回答2:

-25

回答3:

-109