7⼀9-7⼀9×3⼀5+2⼀5,脱式计算?

2024-11-22 23:34:11
推荐回答(2个)
回答(1):

7/9-7/9×3/5+2/蔽搏5
=7/9×(1-3/5)+2/段档5
=7/9×2/5+2/5
=(1+7/9)×2/5
=16/握并乱9×2/5
=32/45

回答(2):

7/好模9-7/9x3/5+2/5
=7/9x(饥芦1-3/5)+2/5
=7/9x2/5+2/5
=2/5x(7/9+1)
=2/友肢缓5x16/9
=32/45