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  • 21-07-2017
  • Mathematics
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Solve the system using elimination. y – x = 13 7y + x = 11

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choixongdong
choixongdong choixongdong
  • 21-07-2017
y – x = 13
7y + x = 11
---------------------add
8y = 24
y = 3

y – x = 13 
3 – x = 13 
-x = 10
x = -10

answer
x = -10 and y = 3
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