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calculează 63÷9×a=35 27-9+25.=.5+6×3-12÷13

Răspuns :

63: 9×a=35
7×a=35
a=35: 7
a=5

26-9+25
=17+25
=42

5+6×3-12÷13
=5+18-???
=23-???
=???