Question

Помогите решить третий пример

Answer 1

$\frac{9x-6}{10} -\frac{2x+5}{3}=1\\\\ \frac{27x-18}{30}-\frac{20x+50}{30}=1\\ \\ \frac{7x-68}{30} =1\\\\7x-68=30\\7x=98\\x=14$