Question

686. 1) 2a - 8a + 3a; 2) 7a -13a -4a;3) 96 -55 -3b;4) 8b + 4b – 7b;5) 0,6c - C + 0,5c;6) 2,90 + 3c - 10c.​

Answer 1

Ответ:

1) 2а-8а+3а = -3

2)7а-13а-4а= -10

3)96-55-3b = 38b

4) 8b+4b -7b = 5b

А дальше я не знаютак как в 6 классе

Answer 2

Let's simplify each of the expressions:

1. 2a - 8a + 3a: Combine like terms: (2a - 8a + 3a) = (-3a).

2. 7a - 13a - 4a: Combine like terms: (7a - 13a - 4a) = (-10a).

3. 96 - 55 - 3b: Perform the subtraction: (96 - 55 - 3b) = (41 - 3b).

4. 8b + 4b - 7b: Combine like terms: (8b + 4b - 7b) = (5b).

5. 0,6c - C + 0,5c: This expression seems to have some formatting issues, but if we interpret it as (0.6c - C + 0.5c), then we can simplify it as follows: Combine like terms: (0.6c + 0.5c - C) = (1.1c - C).

6. 2.90 + 3c - 10c: Combine like terms: (2.90 + 3c - 10c) = (2.90 - 7c).

So, the simplified expressions are:

1. -3a
2. -10a
3. 41 - 3b
4. 5b
5. 1.1c - C (assuming it's meant to be like this)
6. 2.90 - 7c