Respuesta :

n36reeves
Rather than go through all your options, the easiest way to do this is to make a substitution yourself and see if it matches one of the options.


We have:

x+y=6 and x=y+2

We can solve for x on the first one to get x=6-y

Because we have to equations equal to the same thing (x) we can combine them like so:

6-y=y+2

If we rearrange by adding a y to both sides we can see it matches the final choice,

(flipped to match the way they organized it)
y+2+y=6

The final choice is correct.

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