SOLUTION: given the following system : 5x + y = -2 2x + 3y= 7 the value of xy is ?

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Question 365488: given the following system :
5x + y = -2
2x + 3y= 7
the value of xy is ?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

5x + y = -2

2x + 3y= 7



-15x -3y = -2*-3

2x + 3y= 7

-13x = 13

x = -1

y = 3   (-5x -2 )

xy = -3