Question

а)3/7*(1/4+4/9) б)4/5-1/4:5/6 решите пожалуста!!

Answer 1

а) 3/7 * 1/4 + 3/7 * 4/9 = 3/28 +4/21 = 9/84 + 16/84 = 25/84
б) 4/5 - 1/4 : 5/6 = 4/5 - 3/10 = 8/10 - 3/10 = 5/10 = 1/2