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(60*3-30):5+240*3-(120-312:4:3)=

Răspuns :

(180-30):5+240*3-(120-78:3)=
150:5+720-(120-26)=
30+720-94=
30+626=656
(180-30):5+240x3-(120-78:3)=656
=150:5+720-(120-26)=
=30+720-94=
=750-94=
=656