Respuesta :
Let
x----------> number of autographed baseballs Diego has
y----------> number of autographed baseballs Melanie has
we know that
[tex] x=4y [/tex]
equation [tex] 1 [/tex]
[tex] x=24 [/tex]
equation [tex] 2 [/tex]
equate equation [tex] 2 [/tex] and equation [tex] 1 [/tex]
[tex] 4y=24\\\\ y=\frac{24}{4} \\\\ y=6 [/tex]
therefore
the answer is
[tex] 6 [/tex] autographed baseballs