1.2 Compute n1+n2-n3

;Given the following variables of type byte already initialized in memory:
;•n1 db 10
;•n2 db 10h
;•n3 db 10b
;Compute the following expression, the result of which will be saved into variable byte called 'res':
;•n1 + n2 – n3

.MODEL small
.STACK
.DATA
n1 DB 10
n2 DB 10h
n3 DB 10b
res DB ?
.CODE
.STARTUP
MOV AL,n1
ADD AL,n2
SUB AL,n3
MOV res,AL
.EXIT
END

;NB: Here, when I add or subtract numbers with several base, I don't need of convert, because it does automatically