(7⼀5x2⼀3+2⼀3x2⼀7)÷1⼀2怎样简便方法计算

2025-03-22 06:23:16
推荐回答(1个)
回答(1):

(5/7x2/3+2/3x2/7)÷1/2
=(5/7+2/7)×2/3÷1/2
=1×2/3÷1/2
=4/3