Bonsoir, qui pourrait m'aider ? Devoir de maths rédigé en anglais. Merci à celui ou celle qui m'aidera.

Bonsoir,

John : 
4
4 + 17 = 21
21 * 3 = 63
63 - 11 = 52
52 - (4 * 2) = 52 - 8 = 44

Rob : 
-2
-2 + 17 = 15
15 * 3 = 45
45 - 11 = 34
34 - (-2 * 2) = 34 - (-4) = 34 + 4 = 38


Madison
10
10 + 17 = 27
27 * 3 = 81
81 - 11 = 70
70 - (10 * 2) = 70 - 20 = 50

Harry 
-8
-8 + 17 = 9
9 * 3 = 27
27 - 11 = 16
16 - (-8 * 2) = 16 - (-16) = 16 + 16 = 32

Sarah 
15
15 + 17 = 32
32 * 3  = 96
96 - 11 = 85
85 - (15 * 2) = 85 - 30 = 55

They are 2 liars.