Question

ayuda porfa debes hacerse con el metodo de eliminacion​

Answer 1

Respuesta:

Explicación paso a paso:

1)

3x + 5y = 26...........(4)

6x - 4y = -4.............(5)

12x + 20y = 104

30x - 20y = -20

42x = 84

x = 2

y= 4

2)

7x - 8y = -9

4x + 2y = 8.........(4)

7x - 8y = - 9

16x + 8y = 32

23x = 23

x = 1

y = 2

3)

5x + 4y = 27

x + y = 6..........(-4)

5x + 4y = 27

-4x - 4y = -24

x = 3

y = 3

4)

16x + 4y = 28

5x - 2y = -1 ...........(2)

16x + 4y = 28

10x - 4y = -2

26x = 26

x = 1

y = 3

5)

4y - 5x = -12.... (-2)

y - 2x = 6......(5)

10x - 8y = 24

5y - 10x = 30

-3y = 54

y = -18

x= -12