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55365ritz 55365ritz
  • 04-01-2017
  • Mathematics
Answered

7x+2y=-19 and -x+2y=21

Verified Answer :

shadowelite343
shadowelite343 shadowelite343
  • 04-01-2017

subtract the 2 equations

     7x+2y=-19
-    -x+2y = 21
--------------------------
     8x +0y=-2

x= -1/4

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