What is the value of the expression shown when x = - 4?

6 + 3 (x - 5) - (x + 3)

A.

-9

B.

4

C.

2

D.

-20

6 + 3 (x - 5) - (x + 3) =

it is best to simplify the expression

6 + 3x - 15 - x - 3 =

2x + 6 - 18 =

2x - 12 =

Now we put the value of x = - 4

2 * (-4) - 12 = - 8 - 12 = - 20

2. way

6 + 3 * (x - 5) - (x + 3)

immediately we insert a value of x = - 4

6 + 3 * (-4 - 5) - (-4 + 3) =

6 + 3 * (-9) - (-1) =

6 - 27 + 1 = - 27 + 7 = - 20

Aswer D : - 20