SOLUTION: Solve using elimination method. Label each system as consistent or inconsistent. Thank you. w + 8s = - 42 -9w - s = -48

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Solve using elimination method. Label each system as consistent or inconsistent. Thank you. w + 8s = - 42 -9w - s = -48      Log On


   

Question 267285: Solve using elimination method. Label each system as consistent or inconsistent.
Thank you.
w + 8s = - 42
-9w - s = -48
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
w + 8s = - 42 multiply by 9 & add.
-9w - s = -48
9w+72s=-378
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71s=-426
s=-426/71
s=-6 ans.
w+8*-6=-42
w-48=-42
w=-42+48
w=6 ans.
Proof:
-9*6-(-6)=-48
-54+6=-48
-48=-48