помогите срочно!
(1/31+1/30)*1,86
с решением пожалуйста

(1/31 + 1/30) * 1,86 = 0,122

1) 1/31 + 1/30 = 30/930 + 31/930 = 61/930

2) 61/930 * 1,86 = 61/930 * 186/100 = 61/155 * 31/100 = 1891/15500 = 0,122

(1/31 + 1/30) * 1,86 = (30/930 + 31/930) * 1,86 = 61/930 * 1,86 =

= 61/930 * 186/100 = 61/500 = 122/1000 = 0,122