Santiago is trying to show his teacher why the product of two rational numbers is another rational number. His first steps are shown. Which is the best method Santiago
could use to continue?

Let m, n, p, and a represent integers.
By definition, and are both rational

Test with m=1, n = 2, p = 3, and q = 4. Since and are
both rational, it is clear that the statement is true.
mxPmXp
9 nxg
Show that mp and ng are both integers.
n
m x L = mxp
m
x P must be
TE 9
Since is rational and is rational, then
rational
9
nxa
Show that and are all integers.