简便算法(数学):8⼀13÷7+1⼀7×6⼀13 2-6⼀13 ÷9⼀26-2⼀3

2024-11-17 02:40:55
推荐回答(1个)
回答1:

):8/13÷7+1/7×6/13
=8/13*1/7+1/7*6/13
=1/7[8/13+6/13]
=1/7[14/13]
=2/13

2-6/13 ÷9/26-2/3
=2-6/13*26/9-2/3
=2-4/3-2/3
=2-[4/3+2/3]
=2-2
=0