Question

(/-дробная черта)
известно, что a-5b/b=8, найти
1)a/b
2)5a-b/a​

Answer 1

$1)\frac{a-5b}{b}=8\\\\\frac{a}{b}-\frac{5b}{b} =8\\\\\frac{a}{b}-5=8\\\\\frac{a}{b}=8+5\\\\\frac{a}{b}=13\\\\Otvet:\boxed{\frac{a}{b} =13}\\\\\\2)\frac{5a-b}{a} =\frac{5a}{a} -\frac{b}{a}=5-\frac{1}{13}=4\frac{12}{13}\\\\Otvet:\boxed{4\frac{12}{13} }$