Respuesta:
x= -5
x= -7
Explicación paso a paso:
3x - 4y = 13 (8)
8x - 5y = - 5 (-3)
24x-32y=104
-24x+15y= 15
___________
0 -17y=119
Y=119/-17
Y= -7
_______________________
3x-4y=13
3x-4(-7)=13
3x+28=13
3x=13-28
3x= -15
x= -15/3
Comprobar
3(-5)–4(-7)= 13
8(-5)–5(-7)= -5
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Respuesta:
x= -5
x= -7
Explicación paso a paso:
3x - 4y = 13 (8)
8x - 5y = - 5 (-3)
24x-32y=104
-24x+15y= 15
___________
0 -17y=119
Y=119/-17
Y= -7
_______________________
3x-4y=13
3x-4(-7)=13
3x+28=13
3x=13-28
3x= -15
x= -15/3
x= -5
Comprobar
3(-5)–4(-7)= 13
8(-5)–5(-7)= -5