{2×[14+(5+e):6]-5}÷9+7=10

Răspuns :

{2×[14+(5+e):6]-5}÷9+7=10

2×[14+(5+e):6]-5}÷9 = 10-7

2×[14+(5+e):6]-5}÷9 = 3

2×[14+(5+e):6]-5=9×3

2×[14+(5+e):6]-5 =27

2×[14+(5+e):6] = 32

14+(5+e):6 = 32:2

14+(5+e):6 = 16

(5+e):6 =16-14

(5+e):6 = 2
5+e = 2×6
5+e = 12
e = 12-5
e = 7