Question

2x+y= -10
x+3y= 2
metodo de sustitución​

Answer 1

Respuesta:

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Explicación paso a paso:

x-2y=10

2x+3y=-8

Igualación:

x= 10+2y

x= (-8-3y)/2

10+2y=(-8-3y)/2

2(10+2y)=-8-3y

20+4y=-8-3y

4y+3y= -8-20

7y= -28

y= -28/7

y= -4

x=10+2y

x=10+2(-4)

x= 10-8

x= 2

Reducción:

x-2y=10........×-2

2x+3y=-8.....×1

-2x+4y=-20

2x+3y= -8

----+7y= -28

-----+y= -28/7

-----+y= -4

2x+3y=-8

2x=-8-3(-4)

2x= -8+12

x= 4/2

x=2

Sustitución

x-2y=10

2x+3y= -8

x= 10+2y

2(10+2y)+3y= -8

20+4y+3y= -8

7y= -8-20

y= -28/7

y= -4

x= 10+2y

x= 10+2(-4)

x= 10-8

x= 2

x-2y=10

2x+3y=-8

Igualación:

x= 10+2y

x= (-8-3y)/2

10+2y=(-8-3y)/2

2(10+2y)=-8-3y

20+4y=-8-3y

4y+3y= -8-20

7y= -28

y= -28/7

y= -4

x=10+2y

x=10+2(-4)

x= 10-8

x= 2

Reducción:

x-2y=10........×-2

2x+3y=-8.....×1

-2x+4y=-20

2x+3y= -8

----+7y= -28

-----+y= -28/7

-----+y= -4

2x+3y=-8

2x=-8-3(-4)

2x= -8+12

x= 4/2

x=2

Sustitución

x-2y=10

2x+3y= -8

x= 10+2y

2(10+2y)+3y= -8

20+4y+3y= -8

7y= -8-20

y= -28/7

y= -4

x= 10+2y

x= 10+2(-4)

x= 10-8

x= 2