Respuesta :

Answer:

Step-by-step explanation:

3x - 4y = 9...........(1)

2x + 8y = 6..........(2)

Multiply (1) by 2 and (2) by 3

6x - 8y = 18.........(3)

6x + 24y = 18......(4)

Subtracting (3) from (4)

24y - (-8y) = 18 - 18

24y + 8y = 0

32y = 0

y = 0/32

y = 0

Substituting y = 0 into (1)

3y - 4y = 9

3y - 4(0) = 9

3y = 9

y = 9/3

y = 3