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(87-9X4-o)-5X5+10:2=5X2-0:4X7
cum se face acest ex?


Răspuns :

(87-36-0)-25+5=10-0
51-25+5=10
51-20-10=
51-30=
21
o sa rz pe lung
(87-9*4-0)-5*5+10\2=5*2-0\4*7⇔(87-36)-25+5=10⇔51-30=10⇔21=10 (F)
cred ca era A sau F