Bonjour
A | 2 | -32
B | -5 | C
22 | D | E
Somme :
22 + (-5) + (-32) = 22 - 5 - 32 = 22 - 37 = -15
1ere ligne :
A + 2 - 32 = -15
A = -15 - 2 + 32
A = -17 + 32
A = 15
1ere colonne :
15 + B + 22 = -15
B = -15 - 15 - 22
B = -52
2eme colonne :
2 - 5 + D = -15
D = -15 - 2 + 5
D = -17 + 5
D = -12
2eme ligne :
-52 - 5 + C = -15
C = -15 + 52 + 5
C = -15 + 57
C = 42
3eme ligne :
22 - 12 + E = -15
E = -15 - 22 + 12
E = -37 + 12
E = -25
15 | 2 | -32
-52 | -5 | 42
22 | -12 | -25