Question

-9(3 - a)+2(-3a - 3)-7(-9 + a).​

Answer 1

Ответ:-27+9a-6a-6+63-7a=30-4a

Пошаговое объяснение:

Answer 2

Ответ:

-9(3 - a)+2(-3a - 3)-7(-9 + a)= -27+9а-6а-6+63-7а=30-4а   или наоборот-4а+30

Answer 3

To simplify the expression -9(3 - a) + 2(-3a - 3) - 7(-9 + a), you can follow these steps:

1. Distribute the coefficients inside the parentheses: -9(3 - a) = -27 + 9a 2(-3a - 3) = -6a - 6 -7(-9 + a) = 63 - 7a

2. Now, combine like terms by adding or subtracting the coefficients of the same variables: -27 + 9a - 6a - 6 + 63 - 7a

3. Combine like terms: (9a - 7a - 6a) + (-27 - 6 + 63)

4. Perform the arithmetic operations within the parentheses: -4a + 30

So, the simplified expression is: -4a + 30