Решите полно 12,375: (3/4+0,75) (1-0,532): 13/20

1) 12,375 : (3/4 + 0,75) = 99/8 : (3/4 + 3/4) = 99/8 : 3/2 = 99/8 • 2/3 = 33/4 = 8,25
2) (1 - 0,532) : 13/20 = 0,468 • 20/13 = 117/250 • 20/13 = 9/25 • 2 = 18/25 = 0,72