Question

Tìm x biết \(\dfrac{25}{30}=\dfrac{2x+3}{6}\)

Answer 1

\(\dfrac{25}{30}=\dfrac{2x+3}{6}\)

\(\Rightarrow2x+3=\dfrac{25\cdot6}{30}=5\)

\(\Rightarrow2x=2\)

\(\Rightarrow x=1\)

Answer 2

Ta có: \(\dfrac{25}{30}=\dfrac{2x+3}{6}\)

\(\Leftrightarrow\dfrac{2x+3}{6}=\dfrac{5}{6}\)

\(\Leftrightarrow2x+3=5\)

\(\Leftrightarrow2x=2\)

hay x=1

Vậy: x=1