A=ab +ba+ca (cu bara deasupra)
ab(cu bara deasupra)=10a+b
ba(cu bara deasupra)=10b+a
ca(cu bara deasupra)=10c+a
A=ab +ba+ca (cu bara deasupra)=(10a+b)+(10b+a)+(10c+a)
A=ab +ba+ca (cu bara deasupra)=10a+b+10b+a+10c+a
A=ab +ba+ca (cu bara deasupra)=12a+11b+10c
A: B=(ab +ba+ca) (cu bara deasupra):(a+b+c)devine
A:B=(12a+11b+10c):(a+b+c)
12a+11b+10c I a+b+c=
11a+11b+11c 11
__________
a+ 0 - c
(12a+11b+10c):(a+b+c)=cat 11 rest a - c