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A). (-92) + (+32) + (+30) =?

B). (-10)+(+13) +(-16) + (+19) =?


Răspuns :

(-92) + (+32) + (+30) =-60+30=-30
(-10)+(+13) +(-16) + (+19) =3+3=6
a) (-92)+(+32)+(+30)=(-30)
1)(-92)+(+32)=(-60)
2)(-60)+(+30)=(-30)

b) (-10)+(+13)+(-16)+(+19)=+6
1)(-10)+(+13)=+3
2)(+3)+(-16)=-13
3)(-13)+(+19)=+6