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Calculeaza in doua moduri :
a)2x(13+24)=
6x(11+38)=
(33+56)x3+
(12+35)x7=


Răspuns :

a)2•(13+24)=2•37=74
2•(13+24)=26+48=74
b)6•(11+38)=6•49=294
6•(11+38)=66+228=294
c)(33+56)•3=89•3=267
(33+56)•3=99+168=267
d)(12+35)•7=47•7=329
(12+35)•7=84+245=329
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