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CALCULATI
(16:A+5)4=52


Răspuns :

(16 : a + 5)  * 4 = 52
16 : a + 5 = 52 : 4
16 : a = 13 - 5
16 = 8a
a = 16 : 8
a = 2
(16:a+5)·4=52
16:a+5=52:4
16:a+5=13
16:a=13-5
16:a=8
a=16:8
a=2