Subtract the 2nd equation from the first equation and you have
-2y = -2 so y = 1 then substitute y = 1 into 1st equation and you have
x + 8(1) = 4 so x = -4
Thanks that really helped but I got stuck again on this one
So we ignore the 3y as is 0.
On the right:
On the left:
Now we substitute into formulae 1, because it has the lowest number on right
Although the answer says
Hope this is clear, and thank you.