Respuesta :
7/8=x/8
if x/y=z/y where y=y, then x=z
we have
7/8=x/8
8=8
therefor 7=x
the missing value=7
if x/y=z/y where y=y, then x=z
we have
7/8=x/8
8=8
therefor 7=x
the missing value=7