Question

tìm x biết:

5/ x=7/5

Answer 1

\(\dfrac{5}{x}=\dfrac{7}{5}\)

\(\Rightarrow x.7=5.5\)

\(\Rightarrow x.7=25\)

\(\Rightarrow x=25:7\)

\(\Rightarrow x=\dfrac{25}{7}\)

Answer 2

\(\dfrac{5}{x}=\dfrac{7}{5}\)

\(\Rightarrow x=\dfrac{5.5}{7}=\dfrac{25}{7}\)