isabelaparis7557 isabelaparis7557
  • 15-02-2024
  • Mathematics
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Use the echelon method to solve the following system of two equations in two unknowns:
x + y = 12
4x - y = 28
a) (4, 8)
b) (3, 9)
c) (5, 7)
d) (6, 6)

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