chris407
chris407 chris407
  • 11-01-2018
  • Mathematics
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choixongdong
choixongdong choixongdong
  • 11-01-2018
add those 2 equations
2d = 6
  d = 3

d - e = 4
3 - e = 4
e = 3 -4
e = -1

answer
A. the solution (3,-1)
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