9

2(x - y) + 3(2y - 3x)

2x - 2y + 6y - 9x

= -7x + 4y

Added 5/9/2013 6:15:20 AM

This answer has been confirmed as correct and helpful.

8

3(5-7)^2-6(3)

3(-2)^2 - 18

3(4) - 18

12 - 18 = -6

Added 5/9/2013 6:16:31 AM

This answer has been confirmed as correct and helpful.