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## anonymous 5 years ago use multiplying by 1 to find an expression equivelent to 11/18 with a denominator of 18z. The equivelent expression is?

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1. radar

z/z=1 (1/18) times 1 is still 1/18 does not change the value now (1/18) times z/z = z/18z which still has the value of 1/18

2. radar

I know too easy, but an important concept.

3. radar

do you understand?

4. anonymous

yes, i kinda do understand.

5. radar

do you understand that anything divided by it self is 1 ?

6. anonymous

yes

7. radar

then z/z or z divided by itself is 1. Right?

8. anonymous

yes its 1

9. radar

Now for the last piece. Do you undertstand when you multiply anything by 1 you do not change its value?

10. anonymous

yes i understand that too

11. anonymous

its going to be 11/18

12. anonymous

becauese i am mulltiplying by 1

13. radar

we multiplied 1/18 by 1 because z/z is 1 ok we multiplied 11/18 by 1 or z/z so it will now look like 11z/18z I thought we were working with 1/18. Still we haven't changed it its value, just its appearance.

14. radar

Sorry, I slipped up, no wonder you kinda understood it lol

15. radar

better now huh?

16. anonymous

yes :)

17. radar

$11z \over18z$

18. radar

Good luck.

19. anonymous

thnx

20. anonymous

11 -- 18

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