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Robie
a fost răspuns

copiati si completati tabelul:
a= -10,5,-17, o,-8,-20,-13
b=12,-7,17,-3,-4,19,-10
a+b=

Răspuns :

Myssy
a+b=-10+12=2
a+b=5+(-7)=5-7=-2
a+b=-17+17=0
a+b=0+(-3)=0-3=-3
a+b=-8+(-4)=-8-4=-12
a+b=-20+19=-1
a+b=-13+(-10)=-13-10=-23

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