5. (12 points) Select 5 different numbers from $4, 5, 6, 7, 8, 9$ and fill them into the squares below to make the equation true. There are $\qquad$ different ways to do this.
$-$ $\square$ $\square=$ $\square$
5. (12 points) Select 5 different numbers from $4, 5, 6, 7, 8, 9$ and fill them into the following squares to make the equation true. There are $\qquad$ different ways.
$$
=\square
$$
$\square$
【Solution】Solution: According to the analysis, list as follows:
(1) $74-69=5$;
(2) $84-79=5$;
(3) $85-79=6$;
(4) $86-79=7$;
(5) $56-49=7$;
(6) $57-49=8$;
(7) $67-59=8$;
(8) $74-65=9$;
(9) $84-75=9$;
(10) $85-76=9$;
(11) $56-47=9$;
(12) $57-48=9$;
(13) $67 - 58 = 9$,

There are a total of 13 ways.
The answer is 13.