## HammerG 2 years ago Simplify. 5 1/3 + (-3 9/18) A. 1 5/6 B. 2 8/15 C. 3 8/13 D. 8 5/6

1. HammerG

|dw:1341642729696:dw|

2. Raja99

it is 18 or 8

3. Raja99

|dw:1341642903689:dw|

4. HammerG

yes

5. HammerG

18 sorry

6. Raja99

b is ans

7. HammerG

Thanks N why tho?

8. Raja99

??

9. HammerG

I mean why B sorry I kinda like to know why just so I understand ^ ^

10. Wired

The answer is NOT B. I'll explain in my next post.

11. Wired

Since any number divided by itself equals 1, you can rewrite 1 as a fraction, e.g. $1 = \frac{2}{2} = \frac{3}{3} = \frac{6}{6}$ Any whole number can be rewritten as a fraction by multiplying it by 1 in the form of a fraction. 5 can be made into a fraction like so: $5 * 1 = 5*\frac{3}{3} = \frac{15}{3}$ $5\frac{1}{3} = \frac{15}{3} + \frac{1}{3} = \frac{15+1}{3} = \frac{16}{3}$

12. Wired

Similarly, fractions can also be rewritten by multiplying them by 1 in the form of a fraction. In this case we'll need to multiply it by something to get the denominator to equal 18. What fraction do you think it should be @HammerG ?

13. HammerG

yeh its C from what I got.

14. Wired

Nope. If you show your work I can help you figure out where you went of the rails, so to speak.

15. Raja99

no its b

16. Wired

5 and one third minus three and nine eighteenths cannot possibly be B. Even Wolfram Alpha agrees with me.

17. Wired

$5 + \frac{1}{3}-(3+\frac{9}{18})$

18. HammerG

8 5/6

19. Raja99

@wired yo did a big flaw

20. Raja99

its not(3+9/18)

21. Raja99

that term value comes out to (16/3)-(63/18) =1.833

22. lgbasallote

$\huge 5 \frac{1}{3} = \frac{16}{3}$ $\huge -3\frac{9}{18} \implies -3\frac 12 = -\frac{7}{2}$ $\huge \frac{16}{3} - \frac{7}{2} = \frac{32}{6} - \frac{21}{6}$

23. lgbasallote

$\huge 1.833 \ne 2\frac{8}{15}$

24. Raja99

another big flaw@igbasallote..it is not fraction to cancel like that(3 9/18)...it is a mixed fraction

25. lgbasallote

$3\frac{9}{18} = 3\frac{1}{2}$

26. lgbasallote

try it

27. lgbasallote

see for yourself

28. Raja99

no yaar

29. Wired

$\frac{9}{18} = \frac{1}{2}$ $3\frac{1}{2} = \frac{6}{2}+\frac{1}{2}=\frac{7}{2}$ $\frac{16}{3}+-\frac{7}{2} = \frac{16}{3}-\frac{7}{2} = \frac{32}{6}-\frac{21}{6} = \frac{11}{6}=1\frac{5}{6}$ @Raja99 What are you talking about? We KNOW it's a mixed fraction, hence why we're showing our work converting it to fractions, giving them equal denominators, and then adding them together and turning them back into a mixed fraction!

30. lgbasallote
31. lgbasallote

^exactly what i wrote

32. HammerG

33. Wired

@HammerG Yes.

34. HammerG

okay don't want to get confused lol.

35. Wired

All I can tell you is that @lgbasallote and I got the same answer, Wolfram Alpha got the same answer, and we showed how we got it, whereas Raja99 hasn't shown any of his work.

36. Raja99

@igbasallote is correct

37. prettydarkD

Can one person write out the whole problem step by step so i can kno exatly how to it an whats the answer is

38. prettydarkD

can one person show the whole work for this work please

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