Răspuns :
a) 2- (-7) + (+10) - (-23)= 9+ (+10) - (-23)= 19- (-23)=42
b)-39+ (+28)-(+55)= -11 - (+55)= -40
C)=-3
d)87
b)-39+ (+28)-(+55)= -11 - (+55)= -40
C)=-3
d)87
a)(-13)+(+15)-(-7)+(+10)-(-23)=-13+15+7+10+23=42
b)(-26)-(-13)+(+28)-(+55)=-26+13+28-55=41-81=-40
c)[(-17)-0]-[(+2)-(+0)]-{(-2)-[(+14)-0]}=
=-17-2-[(-2)-(+14)]=
-17-2-(+12)=
=-17-2-12=
=-31
d)-46-{-69+[-57+(+75)+(-12)]+(-13)}+(+57)=
-46-[-69+(-57+75-12)-13]+57=
-46-(-69+6-13)+57=
-46++76+57=
87
este cel mai bun raspuns?
b)(-26)-(-13)+(+28)-(+55)=-26+13+28-55=41-81=-40
c)[(-17)-0]-[(+2)-(+0)]-{(-2)-[(+14)-0]}=
=-17-2-[(-2)-(+14)]=
-17-2-(+12)=
=-17-2-12=
=-31
d)-46-{-69+[-57+(+75)+(-12)]+(-13)}+(+57)=
-46-[-69+(-57+75-12)-13]+57=
-46-(-69+6-13)+57=
-46++76+57=
87
este cel mai bun raspuns?