Question

\(\dfrac{2}{7}\chi-\dfrac{3}{5}=\dfrac{4}{15}\) ai giải phát đi :)

 

Answer 1

Answer 2

\(\dfrac{2}{7}x=\dfrac{4}{15}+\dfrac{3}{5}\)

\(\dfrac{2}{7}x=\dfrac{13}{15}\)

\(x=\dfrac{13}{15}:\dfrac{2}{7}\)

\(x=\dfrac{13}{15}x\dfrac{7}{2}\)

\(x=\dfrac{91}{30}\)

Answer 3

     \(\dfrac{2}{7}x-\dfrac{3}{5}=\dfrac{4}{15}\)

⇔ \(\dfrac{2}{7}x=\dfrac{4}{15}+\dfrac{3}{5}\)

⇔\(\dfrac{2}{7}x=\dfrac{13}{15}\)

⇔\(x=\dfrac{13}{15}:\dfrac{2}{7}\)

⇔\(x=\dfrac{91}{30}\)

Answer 4

\(\dfrac{2}{7}\)x-\(\dfrac{3}{5}\)=\(\dfrac{4}{15}\)

=> \(\dfrac{2}{7}\)x=\(\dfrac{13}{15}\)

=> x=\(\dfrac{91}{30}\)

Answer 5

Ta có: \(\dfrac{2}{7}x-\dfrac{3}{5}=\dfrac{4}{15}\)

\(\Leftrightarrow\dfrac{2}{7}x=\dfrac{4}{15}+\dfrac{3}{5}=\dfrac{4}{15}+\dfrac{9}{15}=\dfrac{13}{15}\)

hay \(x=\dfrac{13}{15}:\dfrac{2}{7}=\dfrac{91}{30}\)