I have 4 equations:

#1) Q1 = 8900 - P1 + 2P2

#2) Q1 = 3P1 -1200

#3) Q2 = 11,000 + 2P1 – 5P2

#4) Q2 = 14P2 - 150

I need to set equations #1 and #2 equal to each other and simplify as much as possible.

I need to do the same thing with equations #3 and #4

So,

8900 - P1 + 2P2 = 3P1 -1200

And,

11,000 + 2P1 – 5P2 = 14P2 - 150

I need to simplify each of these as much as possible. Can anyone help?? Please??