Ineed to know both of the answers !

see explanation

Step-by-step explanation:

12.

- 27 = 9(6 + y)

There are 2 possible approaches to solving this equation

Approach 1

divide both sides by 9

- 3 = 6 + y ( subtract 6 from both sides )

- 9 = y ⇒ y = - 9

Approach 2

distribute the parenthesis on the right side of the equation

- 27 = 54 + 9y ( subtract 54 from both sides )

- 81 = 9y ( divide both sides by 9 )

- 9 = y ⇒ y = - 9

13.

- 2(- 2x + 6) = 2 + 3x ( distribute parenthesis on left side )

4x - 12 = 2 + 3x ( subtract 3x from both sides )

x - 12 = 2 ( add 12 to both sides )

x = 14