Question

x/5<3/7

Answer 1

Ta có: \(\frac{x}{5}< \frac{3}{7}\Rightarrow\frac{7x}{35}< \frac{15}{35}\Rightarrow7x< 15\Rightarrow x\in\left\{1;2\right\}\)

Answer 2

x<15/7

Answer 3

\(\frac{x}{5}< \frac{3}{7}\)

\(\Rightarrow\frac{x}{5}< \frac{15}{35}\)

\(\Rightarrow\frac{x}{35}< \frac{15}{15}\Rightarrow x< 15\)