如何计算2*3*4*5*(1⼀2-1⼀3+1⼀4-1⼀5)

2025-01-03 17:54:12
推荐回答(1个)
回答1:

2*3*4*5*(1/2-1/3+1/4-1/5)
=120×(1/2-1/3+1/4-1/5)
=120×1/2-120×1/3+120×1/4-120×1/5
=60-40+30-24
=26