【4⼀7-3⼀14*28】⼀(1⼀5*4)脱式计算,能简算的要简算. 速度!

2024-12-04 23:33:42
推荐回答(1个)
回答1:

=(4/7-3*2)÷(4/5)
=(4/7-3*2)*5/4
=4/7*5/4-6*5/4
=5/7-15/2
=(10-105)/14
=-95/14
=-6又11/14