Answer:
the laundry still need to be washed is 19 by 28
Step-by-step explanation:
The computation of the laundry still need to be washed is shown below:
[tex]= \frac{3}{7} + \frac{1}{4} - \\\\ = \frac{12 + 7}{28} \\\\= \frac{19}{28}[/tex]
Hence, the laundry still need to be washed is 19 by 28
We simply added the both