SOLUTION: Write the solution to this problem as an ordered pair: x - y = 5 & x + 11y = -16

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Question 923974: Write the solution to this problem as an ordered pair:
x - y = 5 & x + 11y = -16
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
x+-+y+=+5......eq.1
x+%2B+11y+=+-16....eq.2
____________________________________subtract eq.2 from eq.1
x+-+y-%28x+%2B+11y%29+=+5-%28-16%29
cross%28x%29+-+y-cross%28x%29+-+11y+=+5%2B16
+-+12y+=+21
+y+=+21%2F-12
+y+=+-21%2F12
+y+=+-1.75
go to x+-+y+=+5......eq.1 plug in +y+=+-1.75
x+-+%28-1.75%29+=+5
x+%2B1.75+=+5
x++=+5-1.75
x++=+3.25
solution: (3.25,-1.75)

see it on a graph: