Question

Determinati numerele de forma a b 1 2 b a astfel incat suma cifrelor sa fie 8, a si b fiind cifre distincte

Answer 1

ab12b rezulta ca a+ 2b+3= 8,  rezulta ca a +2b =5   de unde a=1, b=2, a=3, b=1, a=5, b=0 numerele sunt: 12122, 31121, 50120

Answer 2

    
[tex]a+b+b+1+2 = 8 \\ a+2b=8-3 \\ a+2b=5 \\ a=5-2b \\ \text{Dam valori lui b si il obtinem pe a} \\ b=\boxed{0} ~~~\Rightarrow ~~~a=\boxed{5}~~~\Rightarrow ~~~\overline{ab12b}= \boxed{50120} \\ b=\boxed{1} ~~~\Rightarrow ~~~a=\boxed{3}~~~\Rightarrow ~~~\overline{ab12b}= \boxed{31121} \\ b=\boxed{2} ~~~\Rightarrow ~~~a=\boxed{1}~~~\Rightarrow ~~~\overline{ab12b}= \boxed{12122} [/tex]