Question

Se știe că 5a/7b=25/49,aflați valoarea raportului a/b

Answer 1

$\frac{5a}{7b} = \frac{5}{7} * \frac{a}{b} \\ \frac{5}{7} * \frac{a}{b}= \frac{25}{49} \\ \frac{a}{b} = \frac{25}{49} * \frac{7}{5} \\ \<strong>frac{a}{b} = \frac{5}{7}</strong>$

Answer 2

5a/7b=25/49
7bx25=5ax49
175b=245a
=>a/b=175/245
=> a/b=35/49 sau a/b=5/7