(3⼀5-1⼀2-7⼀12)x(60×3⼀7-1⼀7x60+60×5⼀7)

(3/5-1/2-7/12)x(60×3/7-1/7x60+60×5/7)=?
2024-12-01 10:28:25
推荐回答(1个)
回答(1):

(3/5-1/2-7/12)×(60×3/7-1/7×60+60×5/7)
= (3/5-1/2-7/12)×60×(3/7-1/7+5/7)
= (3/5-1/2-7/12)×60×1
= 3/5×60-1/2×60-7/12×60
= 36-30-35
= -29

希望你能采纳,谢谢。