Question

1/3 · (6а-1 1/5в) + (-4,5а+ 2/5в)

Answer 1

$\frac{1}{3} \times (6a - 1 \frac{1}{5} b) + ( - 4.5a + \frac{2}{5} b)$
выполняем умножение и раскрываем скобку +(-....)

$\frac{6}{3} a - \frac{6}{3 \times 5} b - 4.5a + \frac{2}{5} b = \\ = 2a - \frac{2}{5} b - 4.5a+ \frac{2}{5} b$
противоположные сокращаются (2/5 b)

$2a - 4.5a = - 2.5a$
Ответ : -2.5а

Answer 2

Let's simplify the expression step by step:

1. Distribute the 1/3 to the terms inside the parentheses:

   1/3 · (6а-1 1/5в) = 2а - 1/15в

2. Distribute the -4.5 to the terms inside the parentheses:

   -4.5а + 2/5в

3. Combine the two terms with а:

   2а - 4.5а = -2.5а

4. Combine the two terms with в:

   -1/15в + 2/5в = (2/5 - 1/15)в = 13/75в

5. Add the two terms with the same variables:

   -2.5а + 13/75в

Therefore, the simplified expression is -2.5а + 13/75в.