Question

Assistance on this question. Given equation A as 2x+ 1/2y=3 and equation B as 2/3 x-y=6 which expression will give the value of y?

Answer 1

For this case we have the following system of equations:
Equation A:
`2x + (1/4) y = 3`
Equation B:
`(2/3) x - y = 6`
We multiply Equation B by -3 and obtain:

`-2x + 3y = -18`
Adding both equations we have:

`(1/4) y + 3y = 3 - 18`
From here, we obtain the value of y.
Answer:

`A - 3B`
option 1