T) 2 \(\frac{3}{5}\) - 1 \(\frac{6}{7}\)

T) 2 \(\frac{3}{5}\) - 1 \(\frac{6}{7}\) = \(\frac{2 \cdot 5 + 3}{5}\) - \(\frac{1 \cdot 7 + 6}{7}\) = \(\frac{10 + 3}{5}\) - \(\frac{7 + 6}{7}\) = \(\frac{13}{5}\) - \(\frac{13}{7}\) = \(\frac{13 \cdot 7}{5 \cdot 7}\) - \(\frac{13 \cdot 5}{7 \cdot 5}\) = \(\frac{91}{35}\) - \(\frac{65}{35}\) = \(\frac{91 - 65}{35}\) = \(\frac{26}{35}\)

Ответ: \(\frac{26}{35}\)