Question

WILL GIVE MEDAL. SHOW ME HOW YOU GOT YOUR ANSWER.

Answer 1

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Answer 2

3x+y=8
-x-2y= -10
So if you want to isolate x in the second equation, you would need to add 2y to both sides and then divide by a -1 to get a positive x. Your equations would then look like this
3x+y=8
x= -2y+10
Now since you need to eliminate either x or y you need to see which equation you could add or subtract to get either x or y to equal 0.
2y-10 is your answer.