" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
-2x+6+40=180
x=-67
5x-2y=40
-335-2y=40
y=-187.5
Solución 2:
x+y=120...(a)
x-2y=60...(b)
(a)-(b)
3y=60
y=20
Reemplazando en (a):
x+y=120
x+20=120
x=100
Solución 3:
3x-11=130
3x=141
x=47
Solución 4:
x-2y=150...(a)
2x-y=180...(b)
Multiplicamos (a) por 2:
2x-4y=300...(c)
(b)-(c):
3y=-120
y=-40
Reemplazando en (a):
x-2y=150
x-2(-40)=150
x=70
Solución 5:
2x-y=120...(a)
3x+2y=180...(b)
Multiplicamos (a) por 2:
4x-2y=240...(c)
(b)+(c):
7x=420
x=60
Reemplazando en (a):
2x-y=120
2(60)-y=120
y=0