Respuesta :

3x + y =3 
Y = 2x - 7

substitute 
Y = 2x - 7 into  3x + y =3 
3x + y =3 
3x +2x - 7 =3 
5x = 10
x = 2

Y = 2x - 7 = 2(2) - 7 = -3

answer
(2, -3)


The answer is indeed (2,-3)