## anonymous 4 years ago X+5 over 3 = x-3 over 4

1. anonymous

i posted this in the other than, does it look like this? $\frac{ x + 5 }{ 3 } = \frac{ x - 3 }{ 4 }$

2. anonymous

what can we do with that?

3. anonymous

Yes

4. anonymous

find x?

5. anonymous

Common denominator rite?

6. anonymous

ahhhhhhh!!

7. anonymous

hahahahaha julie u are truely smart :]

8. anonymous

so the lcd is obviously 12 which gets us?

9. anonymous

Im lost

10. anonymous

ok so the Least common denominator of 3 and 4 is 12 so you have to multiply $\frac{ x + 5 }{ 3 } * \frac{ 4 }{ 4 }$

11. anonymous

20x over 12?

12. anonymous

yah. that rite.

13. anonymous

no $\frac{ 4x + 20}{12}$ but i see where you could have done the 20x

14. anonymous

Ooo wats nxt?

15. anonymous

i mean the solution @gaara438125

16. anonymous

so the other side then becomes$\frac{ 3x - 9 }{ 12 }$ because we do $\frac{ x - 3 }{ 4 } * \frac{ 3 }{ 3 }$ so it looks like $\frac{ 4x + 20 }{ 12 } = \frac{ 3x - 9 }{ 12 }$

17. anonymous

multiply both sides by 12 to get what?

18. anonymous

Idk hw to do that

19. anonymous

since both sides are being divided by 12 you can multiply BOTH sides to rid of the fraction leaving only $4x + 20 = 3x - 9$

20. anonymous

Do i combine like terms

21. anonymous

yes :] you are very smart i think your just not trying ;P

22. anonymous

I got it thanks ;)

23. anonymous

ok good