Question

Помогите!!плиз!!!!!!!!!

Answer 1

$1\frac{4}{5}x+1\frac{2}{7}=3\frac{3}5}\\\\ \frac{9}{5}x+\frac{9}{7}=\frac{18}{5}\\\\ 63x+45=126\\\\ 63x=126-45\\\\ 63x=81\\\\ x=\frac{9}{7}=1\frac{2}{7}$