## BloomLocke367 one year ago Hmmm...this is a dumb question, but to get rid of a fraction in an equation, do you multiply everything by the denominator of the fraction, or the reciprocal?

1. BloomLocke367

@jdoe0001 lol sorry for bothering you

2. anonymous

no question is a dumb question

3. Nnesha

you would multiply with the reciprocal of the denominator

4. BloomLocke367

It is when you're in precal honors and can't remember basic math rules lol XD

5. BloomLocke367

thank you

6. Nnesha

$\huge\rm \frac{ \frac{ a }{ b } }{ \frac{ c }{ d } }=\frac{ a }{ b } \times \frac{ d }{ c }$

7. anonymous

haha

8. anonymous

im honers to

9. Nnesha

nice!

10. anonymous

:3

11. jdoe0001

there was a fellow the other day here he said he knew physics, but never seen a logarithm :|

12. jdoe0001

go figure

13. anonymous

r u Muslim Nnesha

14. anonymous

i am

15. BloomLocke367

So I have $$x^2-7x-\frac{3}{4}=0$$, and to get rid of that fraction I'd multiply everything} by $$\frac{4}{3}$$?

16. Nnesha

ahh no!

17. BloomLocke367

wait...you said reciprocal of the denominator... so 1/4

18. BloomLocke367

yes, no, maybe so?

19. BloomLocke367

Oh, and @jdoe0001, I'm taking AP Physics right now XD I love it

20. Nnesha

yes right

21. BloomLocke367

That just creates more fractions D:

22. Nnesha

:3 x^2-7x-\frac{ 3 }{ 4} \times \frac{1}{4} $x^2-7x-\frac{ 3 }{ 4} \times \frac{1}{4}$ don't see any points to get more messy stuff :P

23. triciaal

there are no dumb questions!!!!

24. Nnesha

i didn't noticed it's 1/4 not 4/3

25. anonymous

thats what i sayed

26. BloomLocke367

I dunno...

27. Nnesha

ignore me plz :(

28. BloomLocke367

ummm... okay. I guess I'll just ask Mrs. Dunn tomorrow

29. Nnesha

no wait don't close !

30. anonymous

nesha r u muslim i am

31. BloomLocke367

Please don't put spam on my question. >.<

32. jdoe0001

$$\bf x^2-7x-\frac{3}{4}=0\implies 4\left( x^2-7x-\frac{3}{4} \right)=4(0) \\ \quad \\ 4x^2-21x-\cancel{4}\cdot \cfrac{3}{\cancel{4}}=0\implies 4x^2-21x-3=0$$

33. triciaal

to get rid of a fraction in an equation, do you multiply everything by the denominator of the fraction, or the reciprocal? you multiply everything by the lowest common denominator

34. jdoe0001

hmmm rather $$\bf x^2-7x-\frac{3}{4}=0\implies 4\left( x^2-7x-\frac{3}{4} \right)=4(0) \\ \quad \\ 4x^2-28x-\cancel{4}\cdot \cfrac{3}{\cancel{4}}=0\implies 4x^2-28x-3=0$$

35. BloomLocke367

OKAY THANK YOU OMG.

36. triciaal

remember the denominator of a whole number is 1

37. triciaal

you are welcome

38. BloomLocke367

$$\color{#0cbb34}{\text{Originally Posted by}}$$ @triciaal remember the denominator of a whole number is 1 $$\color{#0cbb34}{\text{End of Quote}}$$ Yes, I know :D

39. Nnesha

fraction in the equation i was doing totally different thin'!

40. Nnesha