Răspuns:
a) 3×(-2)= -6
3×5 -3×7 =15-21= -6
c) -30-50=-80
-5×(6+10)= -5×16=-80
e)2×2=4
2×(-4) + 2×6= -8+12=4
g) 7+35=42
-7×(-1+(-5))= -7×(-1-5)= -7×(-6)=42
b) -3×13=-39
-3×4+(-3×9)=-12+(-27)=-12-27=-39
d)-6×(8+3)=-6×11=-66
-6×8-(-6×(-3))= -48-18=-66
f)-2×(-5)=10
-2×3-(-2×8))=-6-(-16)=-6+16=10
h)-8×(-6-4)=-8×(-10)=80
-8×(-6)+(-8×(-4))=48+32=80