Sagot :
Explications étape par étape:
A = -3+5-(-2) =-3+5+2 =2+2 =4
B = -6+4-5+2-3+1 =-2-5+2-3 +7 = −7+2-3+1 =-5-3+1 =8+1=-7
C = -6+9-1-3 = 3-1-3 = 2-3 = -1
Explications étape par étape:
A = -3+5-(-2) =-3+5+2 =2+2 =4
B = -6+4-5+2-3+1 =-2-5+2-3 +7 = −7+2-3+1 =-5-3+1 =8+1=-7
C = -6+9-1-3 = 3-1-3 = 2-3 = -1