Вычислите: 4/45: (12/25-4/15)+15/16*4/15 решите - вопрос №747493644512254151516415 от Milka20060711 20.06.2020 08:16

Question

Математика: Вычислите: 4/45: (12/25-4/15)+15/16*4/15 решите

Milka20060711 · Answer

4/45 : (12/25 - 4/15) + 15/16 * 4/15 = 2/3

1) 12/25 - 4/15 = 36/75 - 20/75 = 16/75
2) 4/45 : 16/75 = 4/45 * 75/16 = (1*5)(3*4) = 5/12
3) 15/16 * 4/15 = 4/16 = 1/4
4) 5/12 + 1/4 = 5/12 + 3/12 = 8/12 = 2/3