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Desfaceti parantezele si efectuati:-9/20-(-11/20-5/6) va rog!!!


Răspuns :

-9/20 - (-11/20 - 5/6) =

= - 9/20 + 11/20 + 5/6 =

= 2/20 + 5/6 =

= 2×3/60 + 5×10/60 =

= 6/60 + 50/60 =

= 56/60 =

= 14/15