Question

упростите выражение n-4/9n+1/6n и найти его значение при n=2 10/13

Answer 1

n - (4/9 + 1/6 × n) 2 10/13 - (4/9 + 1/6 × 2 10/13)= 36/13 - (16/36 + 6/36 × 36/13)= 36/13 - (22/36×36/13)= 36/13 - 22/13=14/13= 1 1/13