脱式计算:(309*17+375)÷84 1.35⼀3*(1-3⼀2)

2025-03-04 09:10:46
推荐回答(1个)
回答1:

(309*17+375)÷84
=(300*17+9*17+375)÷84
=(5100+153+375)÷84
=5628÷84
=67
1.35/3*(1-3/2)
=1.35/3*(-1)/2
=-2.7/3
=-0.9