+7-8-5+9-6+5+16+20-10-4

解

+ 7 - 8 - 5 + 9 - 6 + 5 + 16 + 20 - 10 - 4

24

解答ステップ

7 - 8 - 5 + 9 - 6 + 5 + 16 + 20 - 10 - 4

演算のPEMDAS順に従う

足して割る (左から右)

7 - 8 = - 1

= - 1 - 5 + 9 - 6 + 5 + 16 + 20 - 10 - 4

- 1 - 5 = - 6

= - 6 + 9 - 6 + 5 + 16 + 20 - 10 - 4

- 6 + 9 = 3

= 3 - 6 + 5 + 16 + 20 - 10 - 4

3 - 6 = - 3

= - 3 + 5 + 16 + 20 - 10 - 4

- 3 + 5 = 2

= 2 + 16 + 20 - 10 - 4

2 + 16 = 18

= 18 + 20 - 10 - 4

18 + 20 = 38

= 38 - 10 - 4

38 - 10 = 28

= 28 - 4

28 - 4 = 24

= 24