Respuestas

2012-11-20T02:18:46+01:00

4x-2y=10

4x=10+2y

 

x=(10+2y)/4

 

 

-2x+3y=1


-2(10+2y)/4+3y=1


(-20-4y)/4+3y=1


(-20-4y+12y)/4=1


(-20+8y)/4=1


(-20+8y)=4


-20+8y=4


8y=4+20


y=24/8


y=3


4x-2y=10


4x-2(3)=10



4x-6=10


4x=10+6


4x=16


x=16/4


x=4