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what value of x did you get?

I got 10, but the answer is 11. I dont know how to get 11 though..

ah, \(\overline{EF}\) is asked.
what did you get for x?

I told you haha, I got 10...

Where did you get the 2 from? And where did the 1/2 go?

i multiplied the first equation by 2 to clear denominator

That would've been better...but if you solve it like that wouldnt x=6?

6x+10-6x=7x+8-6x
10 = x + 8
10-8=x-8
2=x

\[\overline{EF}=3x+5=3(2)+5=11\]

uhm, the third line should read
10-8=x+8-8

Oh I see...but I thought Line EF was half of line BC...?