Question

1. (SLO) Simplify the expression: 6(b-7)

Answer 1

1) 6(b - 7)

 = 6(b) - 6(7)

 = 6b - 42

Answer: B

2) 3(4x + 6y + 2)

= 3(4x) + 3(6y) + 3(2)

= 12x + 18y + 6

Answer: D

3) -(6x + 5y)

= -1(6x) - 1(5y)

= -6x - 5y

Answer: A

Answer 2

1 → B

multiply each term in the parenthesis by the 6 outside

6(b-7) = 6b - 42

2 → D

multiply each term in the parenthesis by the 3 outside

3(4x+6y+2) = 12x+18y+6

3 → A

the value outside the parenthesis is -1, hence each term inside is multiplied by -1

-1(6x+5y) = -6x -5y