An avenue is usually considered to be a wide street, so the meaning of this alphametic problem is incorrect.
Nevertheless, please find the sole correct base 10 solution to this:
NARROW
+ STREET
---------
AVENUE
(no leading zeros)
The digit to letter assignment is as follows:
0 1 2 3 4 5 6 7 8 9
U N O R S V E W T
Then the solution is as follows:
N A R R O W + S T R E E T = A V E N U E
1 6 3 3 2 8 + 4 9 3 7 7 9 = 6 5 7 1 0 7
Edited on August 25, 2022, 12:35 pm