SOLUTION: solve for x and y by using elimination. 3x+5y=-1 4x+7y=4

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Question 637032: solve for x and y by using elimination.
3x+5y=-1
4x+7y=4
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

solve for x and y by using elimination.

 3x+5y=-1      |Multiplying 1st EQ by 4, 2nd by 3 and subtracting to eliminate  x

 4x+7y=4     x+=+%28-7y%2B4%29%2F4

  -y = -16

   y = 16   and x = -27

and...

3%2A%28-27%29+%2B+5%2A%2816%29+=+-1