Question

2 3\5:7 4\5=5X:4 1\2

Answer 1

Ответ:

$2 \frac{3}{5} \div 7 \frac{4}{5} = 5x \div 4 \frac{1}{2} \\ \frac{13}{5} \div \frac{39}{5} = 5x \div \frac{9}{2} \\ \frac{ \frac{ \frac{13}{5} }{39} }{5} = \frac{ \frac{5x}{9} }{2} \\ \frac{13}{39} = \frac{10x}{9} \\ \frac{1}{3} = \frac{10x}{9} \\ 9 = 30x \\ 30x = 9 \\ x = \frac{3}{10}$