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Afla termenul necunoscut:

(56+16:2):8ori B=18

Dau coroana !!!


Răspuns :

(56+16:2):8xb=18
(56+8):8xb=18
64:8xb=18
8xb=18
b=18:8
b=2 rest 2

(56+8):8b=18
64:8b=18
64=18×8b
18b=8
9b=4
b= 4:9=2/3 la patrat