If a, b, and c are digits for which
7 a 2
-4 8 b
=========
c 7 3
then a + b + b = _______
(A) 14
(B) 15
(C) 16
(D) 17
(E) 18
starting hint:
2 + what = 3?
7 a 2
-4 8 b
=========
c 7 3
then a + b + b = _______
(A) 14
(B) 15
(C) 16
(D) 17
(E) 18
2 + what = 3?