1. anonymous

2. anonymous

What is 7*3 and 9*5?

3. anonymous

63/15 @JosiahG

4. anonymous

The answer should be 21 and 45, written as 21/45. Do you understand how I got that?

5. anonymous

Well I got 63/15 because 7*9 is 63 and 5 time 3 is 15. all I have to do is convert. But I guess I got it wrong.

6. anonymous

$-\frac{7}{\cancel{9}^3}\times \frac{\cancel 3^1}{5}=-\frac{7}{15}$

7. anonymous

Oh, there's the issue. You're supposed to multiply the top numbers (numerators) and the bottom numbers (denominators) together, not the same ones on the fraction.

8. anonymous

Ohh okay thanks.

9. anonymous

10. anonymous

First, convert the mixed number into a fraction form so you can multiply it. Do you know how to do that?

11. anonymous

yes.

12. anonymous

its 8/3

13. anonymous

Correct. Now what's 8/3 * 9/1?

14. anonymous

so i do 8 times 3 right?

15. anonymous

Nono, you're supposed to multiply like this: $\frac{ 8 }{ 3 } * \frac{ 9 }{ 1 }$

16. anonymous

Multiply 8 * 9 and then 3 * 1

17. anonymous

okay sorry.

18. anonymous

No worries :) Then what did you get as the answer?

19. anonymous

72/3.

20. anonymous

Then what can you simplify that as?

21. anonymous

so turn it into a mixed?

22. anonymous

It wouldn't be a mixed number in this case, because 72/3= 24

23. anonymous

oh.

24. anonymous

but y cause 72 is larger than 3??

25. anonymous

Basically, the fraction means divide, so $\frac{ 72 }{ 3 } = 24$

26. anonymous

ohhhhh I see.

27. anonymous

Awesome, don't hesitate to ask more questions :)