[tex]\displaystyle\bf\\\overline{ab} - \overline{ba} = 36\\10a + b - (10b + a) = 36\\10a + b - 10b - a = 36\\9a -9b = 36~~~| : 9\\a - b = 4\\\text{\bf~Rezulta ca numerele sunt:}\\51 - 15 = 36\\62 - 26 = 36\\73 - 37 = 36\\84 - 48 = 36\\95 - 59 = 36\\\implies~~\boxed{\bf\overline{ab}\in\{51;~62;~73;~84;~95\}}[/tex]
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