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Baragan
a fost răspuns

Efectuati calculele
a) -92-17+42+(-70+81-1)
b)-6-[2+(-8)-1]
c) 77-204+(245-475)-(41-242-156)
d) 5- {2-[1-(-2)]}-6
e) -400-[-245+(185-6 100)]

Răspuns :

Michimas
a)-92-17+42+(-70+81-1)=
-92-17+42+10=-109+50=-59
b)-6-[2+(-8)-1]=-6+7=1
c)77-204+(245-475)-(41-242-256)=77-204-230+457=-357+457=100
d)5-{2-[1-(-2)]}-6=5-(2-3)-6=5+1-6=6-6=0
e)-400-{-245+(185-6100)]=-400-(-245-5915)=-400+6160=5760
pliz coroana