simple qr ~ plz help

[joonkimdds]

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It's very simple so I don't know why I am not getting the right answer.
J= S-11
S = 2B
2(J+4) = B+4
These are given.

Find S

what I did was set the last one into
2(S-11+4) = (s/2)+4
2(S-7) = (s/2)+4
2S-14 = (s/2)+4
2s - (s/2) = 18
3s/2 = 18
3s = 9
s = 3

but the solution says the S = 12
could someone help~?

 

[Streetwolf]

It's very simple so I don't know why I am not getting the right answer.
J= S-11
S = 2B
2(J+4) = B+4
These are given.

Find S

what I did was set the last one into
2(S-11+4) = (s/2)+4
2(S-7) = (s/2)+4
2S-14 = (s/2)+4
2s - (s/2) = 18
3s/2 = 18
3s = 9
s = 3

but the solution says the S = 12
could someone help~?

Check your work. Near the bottom.

Don't see it? Check again 🙂

 

[joonkimdds]

ah~~!!!
LOL !!!
gah...

 

[aZenki]

lol..right here =)

s/2 = 18
3s = 9
s = 3

too stress? go relax a bit 😀

 

[fldnstrm]

Start looking here ------> 3s/2=18