Respuesta :
we know that
One of the couches takes up [tex]4/9[/tex] of the wall and the other takes up [tex]1/5[/tex] of the wall
so
To find out how much of the wall is covered by couches, add the two amounts
[tex]\frac{4}{9} +\frac{1}{5} =\frac{(5*4+9*1)}{9*5}=\frac{29}{45}[/tex]
therefore
the answer is
[tex]\frac{29}{45}[/tex] of the wall is covered by couches