Question

there are two couches against a wall. if one takes up 4/9 of the wall and the other takes up 1/5 of the wall, how much of the wall is covered by couches?

Answer 1

4/9+1/5=20/45+9/45=29/45 of the wall is covered up by two couches

Answer 2

we know that

One of the couches takes up
`4/9` of the wall and the other takes up
`1/5` of the wall

so

To find out how much of the wall is covered by couches, add the two amounts

`(4)/(9) +(1)/(5) =((5*4+9*1))/(9*5)=(29)/(45)`

therefore

the answer is

`(29)/(45)` of the wall is covered by couches