Question

please solve question 7,8 with explanation

Answer 1

$x - y + x + x + y = 180 \\ x = 60 \\ \frac{x - y}{x} = \frac{1}{120 } \\ 60 - y = \frac{1}{2} \\ y = 59.5 \\ angles \: are \frac{\pi}{360} \frac{\pi}{3} and \: \frac{179\pi}{360}$