talonlewey
talonlewey
19-11-2019
Mathematics
contestada
4x + 2y = 9
5y - 4x = 5
Respuesta :
mirjetamurselaj
mirjetamurselaj
19-11-2019
we sum the both rows with 1×
4×+2y+5y-4x=9+5
7y=14
y=14/7
y=2
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