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5x6+4-20:5
5X9-7X5+25:5-1


Răspuns :

[tex] ^1) ~ 5 * 6 + 4 - 20 : 5 = 30 + 4 - 4 = 34 - 4 = \boxed{30}

^2) ~ 5 * 9 - 7 * 5 + 25 : 5 - 1 = 45 - 35 + 5 - 1 = 10 + 5 - 1 = 15 - 1 =

\boxed{14}


Black.Book[/tex]