5 EJEMPLOS DE SISTEMA DE ECUACIONES

ECUACION LINEAL :

2x+9y=8 2x+9(2)=8

3x+10y=5 2x=8-18

X=-5

3 (2x+9y= 8)

-2(3x+10y=5)

6x+27y=24

-6x-20y=-10

7y=14

y=14 Y=2

7

METODO DE IGUALACION:

2x=8-9y

x=8-9y

2

3x=5-10y x=8-9(2) = 8-18 =-10 X=-5 2 2 2

x=5-10y

3

8-9y = 5-10y

2 3

3(8-9y)=(5-10y)2

24-27y=10-20y

-27+20y=10-24

-7y=-14

y=14/-7 Y=2

METODO DE SUSTITUCION

2x+9y=8

3x+10y=5

3x=5-10y

x=5-10y

3

2 ( 5-10y )+9y=8 10-20y+27=24

1 3 10+7y=24

7y=24-10

3(10-20y+9y=8) Y=14

3 7

x=5-10(2)

3

x=5-20 X=-5

3

x=-15

3