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Sagot :
Solution:
Given:
[tex]-7\times-8[/tex]Directed numbers are numbers with signs.
When multiplying, the following rules apply;
[tex]\begin{gathered} -\times-=+ \\ +\times+=+ \\ -\times+=- \\ +\times-=- \end{gathered}[/tex]Hence,
[tex]\begin{gathered} -7\times-8=(-\times-)(7\times8) \\ =+56 \end{gathered}[/tex]Therefore, the answer is +56
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