Respuesta:
8x−2y=4
2x+4y=2
Despejamos,x:
8x−2y=4−−−x=
8
4+2y
=
4
2+y
2x+4y=2−−−x=
2
2−4y
=1−2y
Igualamos:
2+y=4(1−2y)
2+y=4−8y
y+8y=4−2
9y=2
y=
9
Sustituimos:
x=1−2y
x=1−2(
)
x=1−
x=
5
Saludos.
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Respuesta:
8x−2y=4
2x+4y=2
Despejamos,x:
8x−2y=4−−−x=
8
4+2y
=
4
2+y
2x+4y=2−−−x=
2
2−4y
=1−2y
Igualamos:
4
2+y
=1−2y
2+y=4(1−2y)
2+y=4−8y
y+8y=4−2
9y=2
y=
9
2
Sustituimos:
x=1−2y
x=1−2(
9
2
)
x=1−
9
4
x=
9
5
Saludos.