Explicación paso a paso:
[tex]M=\frac{3}{7}+ \frac{8}{9}=\frac{27+56}{63}=\frac{83}{63}[/tex]
[tex]S=\frac{5}{9}- \frac{1}{2}=\frac{10-9}{18}=\frac{1}{18}[/tex]
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Verified answer
Explicación paso a paso:
[tex]M=\frac{3}{7}+ \frac{8}{9}=\frac{27+56}{63}=\frac{83}{63}[/tex]
[tex]S=\frac{5}{9}- \frac{1}{2}=\frac{10-9}{18}=\frac{1}{18}[/tex]