Răspuns :
10b + a + 5a + 10b = 124
20b + 6a = 124
2(10b+3a)= 124
10b + 3a = 124:2
10b + 3a = 62
a= 4
b=5
ab cu bara deasupra = 45
10b + a + 5a + 10b = 124
20b + 6a = 124
2(10b+3a)= 124
10b + 3a = 124:2
10b + 3a = 62
a= 4
b=5
ab cu bara deasupra = 45