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能简就简.(3-9/16乘以4/3)除以27/281/60除以(4/15+2/5)1/60乘以(4/15+2/5)

题目详情
能简就简.
(3-9/16乘以4/3)除以27/28 1/60除以(4/15+2/5) 1/60乘以(4/15+2/5)
▼优质解答
答案和解析
(3-9/16乘以4/3)除以27/28
=(3-3/4)× 28/27
=9/4×28/27
=7/3
1/60除以(4/15+2/5)
=1÷(4/15×60+2/5×60)
=1÷(16+24)
=1/40