脱式计算:5⼀6*3⼀8+5⼀6*5⼀8 4⼀7*(14+7⼀9) 2除于(3⼀5*2⼀3) 15除(5⼀12+5⼀6)

急。。把算式写详细点
2025-04-24 02:36:58
推荐回答(1个)
回答1:

5/6*3/8+5/6*5/8
=(5/6)*(3/8+5/8)
=(5/6)*1
=5/6

4/7*(14+7/9)
=(4/7)/14+(4/7)*(7/9)
=8+4/9
=8又9分之4

2÷(3/5*2/3)
=2÷(2/5)
=2*(5/2)
=5

15÷(5/12+5/6)
=15÷(5/12+10/12)
=15÷(15/12)
=15*(12/15)
=12