Question

For the system shown, what is the value of x + 2y?

x + 1/3y = 0
6x - 2y = 6

Answer 1

Explanation:

x +
`(y)/(3)` = 0 ------ ( 1 )

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

6x + 2y = 0 ----- ( 3 )

6x - 2y = 6 ------ ( 4 )

Adding ( 3 ) and ( 4 ) ; we get ,

12x = 6

x = 1/2

putting value of x in (3) , we get ,

3 + 2y = 0

2y = -3

x + 2y = (1/2) - 3

= - 5/2