Question

{15-4/11×[(-24)ⅹ(5/4-3/8+5/24)-4]}×(-11/15)等于多少？

要求有过程，答案正确。

Answer 1

{15-4/11×[(-24)ⅹ(5/4-3/8+5/24)-4]}×(-11/15)
=[15-4/11×(-30+9-5-4)]×(-11/15)
=[15-4/11×(-30)]×(-11/15)
=[15+120/11]×(-11/15)
=-11-8
=-19.

Answer 2

{15-4/11×[(-24)ⅹ(5/4-3/8+5/24)-4]}×(-11/15)
=[15-4/11×(-30+9-5-4)]×(-11/15)
=[15-4/11×(-30)]×(-11/15)
=[15+120/11]×(-11/15)
=-11-8
=-19.

Answer 3

27/4一x=27一(4/60)x一(7/120)x÷6+7x/480
3240一480x=12960一32x一28x÷6+7x
19440一2880ⅹ=77760一192x一28x+42x
一2702ⅹ=58320
ⅹ≈一21.5840。

Answer 4

15-4/11×[(-24)ⅹ(5/4-3/8+5/24)-4]×(-11/15)
=7

Answer 5