Ta có :
\(\overline{a,b}.\overline{ab,a}=\overline{ab,ab}\)
\(\Leftrightarrow\)\(\left(\overline{a,b}.10\right)\left(\overline{ab,a}.10\right)=\overline{ab,ab}.100\)
\(\Leftrightarrow\)\(\overline{ab}.\overline{aba}=\overline{abab}\)
\(\Leftrightarrow\)\(\overline{ab}.\overline{aba}=\overline{ab}.\left(100+1\right)\)
\(\Leftrightarrow\)\(\overline{aba}=101\)
\(\Rightarrow\)\(a=1\)\(;\)\(b=0\)
Vậy \(a=1\) và \(b=0\)
\(\text{a,b.ab,a=ab,ab}\)
\(\Rightarrow\)\(\text{ab.aba=abab}\)
\(\Rightarrow\)\(\text{ab.aba=ab.101}\)
\(\Rightarrow\)\(\text{aba=101}\)
\(\Rightarrow\)\(\text{(a;b)=(1;0)}\)
\(\text{Vậy (a;b)=(1;0)}\)
a = 1 ; b = 0 . các bạn k cho mk nhé