Ответ:
[tex]\displaystyle \frac{5}{c}[/tex]
Объяснение:
[tex]\displaystyle \frac{c-5}{c^2-4c}:\frac{c-5}{5c-20}=\frac{c-5}{c(c-4)}:\frac{c-5}{5(c-4)}=\\\\\\\frac{c-5}{c(c-4)}\cdot \frac{5(c-4)}{c-5}=\frac{5}{c}[/tex]
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Ответ:
[tex]\displaystyle \frac{5}{c}[/tex]
Объяснение:
[tex]\displaystyle \frac{c-5}{c^2-4c}:\frac{c-5}{5c-20}=\frac{c-5}{c(c-4)}:\frac{c-5}{5(c-4)}=\\\\\\\frac{c-5}{c(c-4)}\cdot \frac{5(c-4)}{c-5}=\frac{5}{c}[/tex]