Respuesta :
[tex]\bf \underset{\textit{\qquad \Large 57 + 27 = 84 units}}{\stackrel{\textit{57 units}}{\boxed{-57}\rule[0.35em]{20em}{0.25pt}}0\stackrel{\textit{27 units}}{\rule[0.35em]{9em}{0.25pt}\boxed{27}}}[/tex]
[tex]\bf \underset{\textit{\qquad \Large 57 + 27 = 84 units}}{\stackrel{\textit{57 units}}{\boxed{-57}\rule[0.35em]{20em}{0.25pt}}0\stackrel{\textit{27 units}}{\rule[0.35em]{9em}{0.25pt}\boxed{27}}}[/tex]
