3⼀8-5⼀8x3⼀5+3⼀5用简便方法算

2024-12-20 13:40:14
推荐回答(1个)
回答1:

3/8-5/8x3/5+3/5
=3/8+3/5(-5/8+1)
=3/8+3/5×3/8
=3/8×(1+3/5)
=3/5

3/8-5/8x3/5+3/5
=3/8-3/8+3/5
=3/5