4-1\15*2 2\9 помогите!!!!!
4 - 1/15 * 2 2/9 = 3 23/27 1) 1/15 * 2 2/9 = 1/15 * 20/9 = 1/3 * 4/9 = 4/27 2) 4 - 4/27 = 3 27/27 - 4/27 = 3 23/27