Answer:
Step-by-step explanation:
[tex]5\frac{1}{4} =x[/tex]
[tex]3\frac{3}{4} =y[/tex]
x-y=?
so
?+y=x
which means
[tex]?+ 3\frac{3}{4} = 5\frac{1}{4}[/tex]
i hope this helps