Question

3/5:(9/10-3/5*8/9) ответ примера

Answer 1

= 3/5 : (9/10 - 8/15) = 3/5 : (135/150 - 80/150) = 3/5 : 55/150 = 3/5 · 150/55 = 90/55 = 1 35/55