4除以7⼀3+3*3⼀7 12⼀13除以2⼀5*1⼀6 3⼀5除以(3⼀5-2⼀5)*3⼀5 能简算的要简算

2024-12-19 12:43:51
推荐回答(1个)
回答1:

4÷7/3+3*3/7
=4×3/7+3×3/7
=(4+3)×3/7
=7×3/7
=3

12/13÷2/5*1/6
=(12/13*1/6)÷2/5
=2/13×5/2
=5/13

3/5÷(3/5-2/5)*3/5
=3/5÷1/5×3/5
=3×3/5
=1.8