Răspuns:
-1-2-3-4=-10
-3+1+9-7=0
(+3)+(+7)=-4
(+5)-(-4)=1
(-5)×(-3)=-15
(-42):(6)=-7
(-3)³+(-2)⁴=-27+16=-11
(2-6)-(-3-1)=-4-(-4)=-8
