(36*17-12)÷15简便计算

2024-11-24 09:07:54
推荐回答(2个)
回答1:

回答2:

(36*17-12)÷15
=(12×3×17-12)÷15
=(12×51-12)÷15
=12×50÷3÷5
=4×10=40