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Mathematics, 16.02.2021 22:10 shongmadi77

La un concurs, se acordă 10 puncte pentru o problemă rezolvată corect si se scad 2 puncte pentru o problemă rezolvată greşit. Teodor a trimis la concurs 20 de probleme şi a primit 176
de puncte. Câte probleme a rezolvat corect şi câte a rezolvat greşit?

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