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-3•[5-3•(-5+1):6]=-21va rog

Răspuns :

Răspuns:

= -3*(5+12:6)

= -3*(5+2)

= -3*7

= -21

-3•[5-3•(-5+1):6]=-21
-3•[5-3•(-4):6]=-21
-3•(5+12:6)=-21
-3•7=-21
-21=-21 (adevărat)

SUCCES!