Question

Find the values of the letters in each of the following and give reasons for the steps involved
$18A$
$+BA7$
__________
$CB2$

Answer 1

Since we know that,
$5+7=12$
$\therefore A=5$
$B=4,C=6$
$185$
$+457$
____________
$642$
Hence, $A=5,B=4,C=6$