Question

х+1 2/5х=3 5/7 решите пожалуйста

Answer 1

$x + 1 \frac{2}{5} x = 3 \frac{5}{7} \\ 2 \frac{2}{5} x = 3 \frac{5}{7} \\ x = 3 \frac{5}{7} \div 2 \frac{2}{5} = \frac{26}{7} \div \frac{12}{5} \\ = \frac{26}{7} \times \frac{5}{12} = \frac{65}{42} = 1 \frac{23}{42}$