Question

determinati valoarea luterelor a si b daca ba+ b= bb. Gasiti toate pisibilitatile!!

Answer 1

ba+b=bb
10b+a+b=10b+b 
a=10b+b-10b+b
a=b(10+1-10-1)
a=b*0
a=0
=> b={1, 2, 3, 4, 5, 6, 7, 8, 9}
10+1=11
20+2=22
30+3=33
40+4=44
50+5=55
60+6=66
70+7=77
80+8=88
90+9=99