Tìm x biết: (x+10)/27 = x/9

\(\frac{{x + 10}}{{27}} = \frac{x}{9}\)

⇔ \(\frac{{x + 10}}{{27}} = \frac{{3x}}{{27}}\)

⇔ x + 10 = 3x

⇔ 10 = 2x

⇔ x = 5

Vậy x = 5.