Simple...
you have [tex] \frac{3}{8} [/tex] and [tex] \frac{2}{5} [/tex]
Just subtract...but first find a common denominator...
Use 40 as the common denominator...
[tex] \frac{3}{8} * \frac{5}{5} = \frac{15}{40} [/tex]
and
[tex] \frac{2}{5} * \frac{8}{8} = \frac{16}{40} [/tex]
So, subtract,
[tex] \frac{15}{40}
-
\frac{16}{40} [/tex]
=[tex]- \frac{1}{40} [/tex]
Thus, your answer.
