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## anonymous 3 years ago what number mulitplied by the numerator and added to the denominator of 4/9 makes the resulting fraction equilavent to 7/4?? the number is?

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1. anonymous

@ArkGoLucky

2. anonymous

um I don't think this is possible because the numerator of the first fraction is not changed so it can't equal the second fraction. ever

3. anonymous

4 does not equal 7

4. anonymous

it dosent' have a answer box for not a answer

5. anonymous

@jim_thompson5910

6. anonymous

I have no idea either

7. anonymous

oh wait nvm, there is an answer. The number just has to be a fraction

8. anonymous

ok.

9. anonymous

Is there a box for a fraction?

10. anonymous

yea

11. anonymous

okay cool

12. anonymous

do u know it? lol

13. anonymous

okay got

14. anonymous

it

15. anonymous

so here's what you do so make an equation say x is the number you're looking for try to think of a way you can make an equation using x

16. anonymous

ask if you need help

17. anonymous

I'll give you a hint use 4x

18. anonymous

ok so what do i do now with the 4x?

19. anonymous

is the answer going to be 2? @ArkGoLucky

20. anonymous

not quite. I'll just show you the equation. So you know that the number x, when multiplied by the numerator(4) then added to the denominator(9) equals 7/4 That means 4/9+4x=7/4

21. anonymous

so 7/4 is the answer or do i solve that?

22. anonymous

no, now you solve for x, which is the number you're looking for

23. anonymous

i got 47/144?

24. anonymous

is that right or wrong?

25. anonymous

almost

26. anonymous

the numerator is right except it's a negative and the denominator is wrong

27. anonymous

how did i get the denominator wrong?

28. anonymous

did you solve x in$\frac{ 4 }{ 9+4x }=\frac{ 7 }{ 4 }$

29. anonymous

yea and i got that big fraction

30. anonymous

try plugging in your answer into that equation

31. anonymous

okay I'll show you how to solve for x multiply both sides of the equation by the common denominator. In this case, it is (4)(9+4x) this is to rid of the fractions

32. anonymous

when you do this, you get 16=7(9+4x) I'm sure you can solve for x now

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