100-6-5-4-3-42-51

解

100 - 6 - 5 - 4 - 3 - 42 - 51

- 11

解答ステップ

100 - 6 - 5 - 4 - 3 - 42 - 51

演算のPEMDAS順に従う

足して割る (左から右)

100 - 6 = 94

= 94 - 5 - 4 - 3 - 42 - 51

94 - 5 = 89

= 89 - 4 - 3 - 42 - 51

89 - 4 = 85

= 85 - 3 - 42 - 51

85 - 3 = 82

= 82 - 42 - 51

82 - 42 = 40

= 40 - 51

40 - 51 = - 11

= - 11