1-2-3-5+6-7+10+11-13

解

1 - 2 - 3 - 5 + 6 - 7 + 10 + 11 - 13

- 2

解答ステップ

1 - 2 - 3 - 5 + 6 - 7 + 10 + 11 - 13

演算のPEMDAS順に従う

足して割る (左から右)

1 - 2 = - 1

= - 1 - 3 - 5 + 6 - 7 + 10 + 11 - 13

- 1 - 3 = - 4

= - 4 - 5 + 6 - 7 + 10 + 11 - 13

- 4 - 5 = - 9

= - 9 + 6 - 7 + 10 + 11 - 13

- 9 + 6 = - 3

= - 3 - 7 + 10 + 11 - 13

- 3 - 7 = - 10

= - 10 + 10 + 11 - 13

- 10 + 10 = 0

= 0 + 11 - 13

0 + 11 = 11

= 11 - 13

11 - 13 = - 2

= - 2

数直線

= - 2