Explicație pas cu pas:
[tex] \frac{2x}{ \frac{2}{15} } = \frac{ \frac{1}{15} }{0.2} \\ 2x = \frac{ \frac{2}{15} \times \frac{1}{15} }{\frac{2}{10} } = \frac{ \frac{2}{15} }{ \frac{2}{10} } \\ 2x= \frac{2}{15} \div \frac{2}{10} = \frac{2}{15} \times \frac{10}{2} = \frac{2}{3} \\ x = \frac{2}{3} \div 2 = \frac{2}{3} \times \frac{1}{2} = \frac{1}{3} [/tex]
