Помогите решить уровнения! С ДРОБЯМИ! 1) (у + 5\7) * 1\3 = 2 4\9 2) (1 15\25 + х) - 4\5 =...

Решите задачу:

$1)(y + \frac{5}{7} ) \times \frac{1}{3} = 2 \frac{4}{9} \\ \\ \frac{1}{3} y + \frac{5}{21} = 2 \frac{4}{9} \\ \\ \frac{1}{3} y = 2 \frac{4}{9} - \frac{5}{21} \\ \\ \frac{1}{3} y = 2 \frac{13}{63} \\ \\ y = 2 \frac{13}{16} \div \frac{1}{3} \\ \\ y = 6 \frac{13}{21}$

$2)(1 \frac{15}{25} + x) - \frac{4}{5} = 4 \frac{2}{25} \\ \\ (\frac{40}{25} + x) - \frac{4}{5} = \frac{102}{25} \\ \\ \frac{8}{5} + x - \frac{4}{5} = \frac{102}{25} \\ \\ \frac{4}{5} + x = \frac{102}{25} \\ \\ x = \frac{102}{25} - \frac{4}{5} \\ \\ x = \frac{82}{25} = 3.28$

$3)(8 \frac{3}{14} - y) \div \frac{3}{7} = 17 \\ \\ (\frac{115}{14} - y) \times \frac{7}{3} = 17 \\ \\ \frac{115}{6} - \frac{7}{3} y = 17 \\ \\ 115 - 14y = 102 \\ \\ - 14y = 102 - 115 \\ \\ - 14y = - 13 \\ \\ y = - 13 \div ( - 14) \\ \\ y = \frac{13}{14}$