Répondre :
A=8-6-3-8+2 = -7
B=(-2+3)-6+(-4-2) = -11
A-B+(-4) = -7 - (-11) -4 = -7+11-4= 0
1°c=-2-4-6-1 ??? 2° on donne A=8-6-3-8+2 et B=(-2+3)-6+(-4-2) CalculerA et B _Montrer que A-B+(-4)=0
A=8-6-3-8+2 = -7
B=(-2+3)-6+(-4-2) = -11
A-B+(-4) = -7 - (-11) -4 = -7+11-4= 0