Question

2x+y=17
2x+5y=25

Answer 1

If you subtract both equations, what do you get?

2x - 2x + y - 5y = 17 - 25

Can you simplify it more? :)

Answer 2

i know that y=7 but does x =5?

Answer 3

y does not equal 7
and x does not equal 5.

Answer 4

Just simplify this:

2x - 2x + y - 5y = 17 - 25

and you'll find the y-value

Answer 5

And then, you can choose any equation and plug in whatever y-value you get and solve for the x-value.