Explicație pas cu pas:
[tex]\left( \frac{6}{1} - \frac{1}{2} \right) \div \frac{x}{1} = \frac{13}{2} \\ \frac{12 - 1}{2} \times \frac{1}{x} = \frac{13}{2} \\ \frac{11}{2x} = \frac{13}{2} < = > x = \frac{11 \times 2}{13 \times 2} \\ = > x = \frac{11}{13} [/tex]
