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-5[-4+(-6+2-0)•(-3)-(11-7)•2]-(-4)•(15-10)


Răspuns :

-5[-4+(-6+2-0)•(-3)-(11-7)•2]-(-4)•(15-10) =
=-5[-4+(-4)•(-3)-(4)•2]-(-4)•(-5) =
=-5(-4+12-8)-20 =
=-5(0)-20 =
=0-20=-20