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30 + [ 60-6×(63:9+36:9)-6]


Pls


Răspuns :

30+[60-6×(63:9+36:9)-6] =
30+[60-6×(7+4)-6]=
30+(60-6×11-6)=
30+(60-66-6)=
30+(-12 )=
30-12=
=18.
SUCCES!