Respuesta:
-X + Y=4
X + ½Y=3
1)
-x+y= 4
-x= 4 - y
X= - 4+y
2)
X+1/2y=3
2x+ y= 6
2x= 6-y
X= (6-y)/2
Igualamos
X= x
-4+y= (6 -y)/2
-8+2y= 6 - y
2y+y= 6 +8
3y= 14
Y= 14/3.
X= - 4+14/3
X= - 12/3+14/3
X= 2/3.
Comprobamos
-2/3+ 14/3= 4
12/3= 4
4= 4.
Saludos❤️
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Respuesta:
-X + Y=4
X + ½Y=3
1)
-x+y= 4
-x= 4 - y
X= - 4+y
2)
X+1/2y=3
2x+ y= 6
2x= 6-y
X= (6-y)/2
Igualamos
X= x
-4+y= (6 -y)/2
-8+2y= 6 - y
2y+y= 6 +8
3y= 14
Y= 14/3.
X= - 4+y
X= - 4+14/3
X= - 12/3+14/3
X= 2/3.
Comprobamos
-X + Y=4
-2/3+ 14/3= 4
12/3= 4
4= 4.
Saludos❤️