First, let's combine like terms for each set of parentheses:
12 + 2а - 8 -6а = 4 - 4а9,15 - 7,35 = 2,8
Now, we can add the two results together:
4 - 4а + 2,8
To combine the terms, we add the numbers together and the variables together:
(4 + 2) + (-4а + 8) = 6 - 4a + 8
Therefore, the final result is 6 - 4a + 8.
First, let's combine like terms for each set of parentheses:
12 + 2а - 8 -6а = 4 - 4а
9,15 - 7,35 = 2,8
Now, we can add the two results together:
4 - 4а + 2,8
To combine the terms, we add the numbers together and the variables together:
(4 + 2) + (-4а + 8) = 6 - 4a + 8
Therefore, the final result is 6 - 4a + 8.