[4又4⼀7÷(2又1⼀2—1又9⼀11)—9又1⼀3×5⼀21]×1又3⼀4

2025-02-22 11:08:59
推荐回答(1个)
回答1:

[(4+4/7)÷(2+1/2—1+9/11)—(9+1/3)×5/21]×(1+3/4)
=[32/7÷(5/2-20/11)-28/3*5/21]×7/4
=[8÷(55/22-40/22)-20/9*7/4]
=8÷15/22-35/9
=176/15-35/9
=883/135
=6+73/135