Question
Find the missing digits. 
4 A B + C B 5 = 5 B 7
(a) A
(b) B
(c) C
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

Find the missing digits. 
4 A B + C B 5 = 5 B 7
(a) A
(b) B
(c) C