Question

выполните действия 4/9(2,7m-2 целых 1/4n)-4,2(5/7m-0,5n)

Answer 1

ну должно получится что-то вроде этого)

Answer 2

4/9(2,7m-2+1/4n)-4,2(5/7m-0,5n)

First, distribute the 4/9 to each term inside the parentheses: (8/9m - 8/9 + 1/36n) - 4,2(5/7m - 0,5n)

Next, distribute the 4,2 to each term inside the parentheses: 8/9m - 8/9 + 1/36n - 21/5m + 2,1n

Combine like terms: 8/9m - 21/5m - 8/9 - 1/36n + 2,1n

Now, combine the m terms and the n terms: (-143/45m + 75/36n) - 8/9 - 1/36n + 2,1n

Finally, combine the constant terms: -143/45m + 75/36n - 8/9 - 1/36n + 2,1n -143/45m + 75/36n - 8/9 + 75/36n - 8/9

So, the simplified expression is: -143/45m + 150/36n - 16/9