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30-09-2016
Mathematics

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Given the system of equations, what is the solution?

5x - 4y = 7
x = 5 - y

Respuesta :

30-09-2016

(x=5-y)×4. 5x-4y=7. + 4x+4y=20. 5x-4y+4x+4y=7+20. 5x+4x=27. 9x=27. x=3 & y= 2

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