Question

−7(4−a)+3(−2a−2)−7(−9+a).

Answer 1

Ответ:

29 - 6a

...............................

Answer 2

Ответ:

29 - 6а ...... ....... .. . .....

Answer 3

Let's simplify the expression step by step:

−7(4−a) + 3(−2a−2) − 7(−9+a)

First, distribute the coefficients:

-7 * 4 + 7 * a + 3 * (-2a) - 3 * 2 - 7 * -9 + 7 * a

Now simplify each term:

-28 + 7a - 6a - 6 + 63 + 7a

Combine like terms:

(7a - 6a + 7a) - 28 - 6 + 63

8a - 28 + 57

8a + 29

So, the simplified expression is 8a + 29.