Joyeria28
Joyeria28
21-04-2015
Mathematics
contestada
3x + y = 15
5x - y = 9
Respuesta :
Panoyin
Panoyin
21-04-2015
3x + y = 15
5x - y = 9
8x
=
24
8 8
x = 3
3(3) + y = 15
9 + y = 15
- 9 - 9
y = 6
(x, y) = (3, 6)
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