Răspuns:
a) 4+(-5)×(+2)= -6
-9+(-6)×8= -57
8-(-9)×(-5)= -37
12+7×(-3)= -9
10-8×(-5)= 50
b). -1+(-6+3)×5= -16
7-(-3-2)×(-4)= -13
-6+(4-5)×(-2-3)= -1
3×(-5)-(-9+2)×(+5)= -29
-2×(4+3)-(-2+7)×(-3+1)= -4
c). 7-(-9+2)×(-3)×7= -140
-9+(-5-2)×(4-5)×(-3)= -30
12-7×(-4+2)×(-5-3)= -100
-15×(-3)+(-2+3)×5×(-4-2)= 15
13-(-9)×(-4+7)-(-3+5)×(-2-3)= 50
