Question

hich of the following equations could be the result of using the comparison method to solve the system shown?
x + y = 5

2x + y = 7

-x - 5 = 7 - 2x
5 - x = 7 - 2x
5 - x = 2x - 7

Answer 1

1) subtract \(y\) from both equations. What do you get?

Answer 2

No wait. Subtract \(x\).

Answer 3

And then use substitution. Can you manage?

Answer 4

i will work it out if i need more i will ask

Answer 5

i got
y=5-x
2x+5-x=7
so wat is the next step i mess up on this part

Answer 6

-2x for 2x+5-x= 5 - x = 7 - 2x