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Calculti respectand ordinea efectuarii operatiilor a)7+23-81:9; b)(22+72:9)+6x8; c) 4x(75-68)+(81:9-63:9)​

Răspuns :

Răspuns:

a) 7+23-9

30-9=21

b) (22+8)+48

30+48=78

c) 4x7+ (9-7)

28+2=30

Răspuns:

a) 7+23-9=30+9=39

b)(22+8)+6×8=30+6×8=30+48=78

c)4×8+(9-7)=4×8+7=32+7=39