Question

помогите решить пример 4/15*25/28. 21/26*39/84. 15/29*58/105. 7ц*5/21

Answer 1

4/15 * 25/28 = 5/21,

21/26 * 39/84 = 3/8,

15/29 * 58/105 = 6/21,

7 * 5/21 = 5/3 = 1 2/3