Question

Докажите тождество......

Answer 1

на фотке.............

Answer 2

$\frac{1}{2 } x + \frac{4}{10} - \frac{1}{5} + x = 1 \frac{1}{2} x + \frac{1}{5} \\ \\ 1 \frac{1}{2} x + \frac{4 - 2}{10} = 1 \frac{1}{2}x + \frac{1}{5} \\ \\ 1 \frac{1}{2}x + \frac{1}{5} = 1 \frac{1}{2}x + \frac{1}{5}$