1⼀2×1⼀15+1⼀3×1⼀2=?这题怎么计算?请说明基本原理及其公式好吗谢谢

2024-11-29 16:15:17
推荐回答(1个)
回答1:

1/2×1/15+1/3×1/2
=1/(2×15)+1/(3×2)
=1/30+1/6
=1/30+5/30
=6/30
=1/5