Question

Tìm x biết

x-2/18=2/3

Answer 1

Giải:

\(x-\dfrac{2}{18}=\dfrac{2}{3}\)

\(\Leftrightarrow x=\dfrac{2}{3}+\dfrac{2}{18}\)

\(\Leftrightarrow x=\dfrac{12}{18}+\dfrac{2}{18}\)

\(\Leftrightarrow x=\dfrac{12+2}{18}\)

\(\Leftrightarrow x=\dfrac{14}{18}=\dfrac{7}{9}\)

Vậy ...

Answer 2

x - 2/18 = 2/3

⇔ x = 2/3 + 2/18

x = 12/18 + 2/18

x = 14/18

x = 7/9