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## snowballhockey Group Title 12/4= /5 wat is the blank 2 years ago 2 years ago

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1. UnkleRhaukus Group Title

15

2. Preetha Group Title

UnkleRhaukus, it may help her if you explained how you arrived at that solution.

3. Directrix Group Title

12/4 = x / 5 4x = 60 x = 15

4. Preetha Group Title

And does that make sense Snowball? Are you able to do one on your own? Thanks Directrix.

5. snowballhockey Group Title

i think u multiply 12 and 5 and then get answer that doesn' tmake sence

6. Preetha Group Title

Ok, I see. When you have an equation, you can do the same thing on both sides, it remains an equation. So if you add 10 to the right hand side, you can add 10 to the left hand side and it will still be an equation. With me?

7. Preetha Group Title

Now, we are trying to find out what is the number that is above 5, so we represent the blank by a x.

8. Preetha Group Title

The next step is to simplify it. We want all the terms with x on one side of the = and all the terms without x on the other side.

9. MSMR Group Title

I would cross multiply.

10. snowballhockey Group Title

i am with msmer

11. UnkleRhaukus Group Title

$12/4=3$ $x/5=3$$x=15$

12. Preetha Group Title

Multiply both sides by 5. On the left you have, 5 x (12/4) and on the other side you have 5 x (x/4) What do you get then ? What happens when you multiply 5 into x/4

13. MSMR Group Title

This means: $\frac{12}{4} = \frac{x}{5}$ To cross multiply, you multiply the numerator of one fraction with the denominator of the other fraction.

14. Preetha Group Title

I like Unkle's solution as well.

15. MSMR Group Title

5*12 = 4*x

16. UnkleRhaukus Group Title

why do it the hard way for?

17. MSMR Group Title

60 = 4x

18. MSMR Group Title

x = 15

19. snowballhockey Group Title

GIVE ME THE EASY WAY ONE STEP AT A TIME OK DRAW IT

20. Preetha Group Title

Ok, snowball, go back to my last post, Are you with me?

21. snowballhockey Group Title

no draw it

22. MSMR Group Title

unklerhaukus: for this particular problem, your solution would be easier because 12/4 simplifies to 3. However, in a case such as 13/4 where it does not simplify into a nice number, cross multiplying will be much easier - I thought it would be good to show snowballhockey how to set that up.

23. Preetha Group Title

|dw:1328749514080:dw|

24. MSMR Group Title

|dw:1328749565365:dw|

25. Preetha Group Title

MSMR's does look better.

26. snowballhockey Group Title

i getthe 60 part then after that u simplfy that with 5

27. Preetha Group Title

Yes.

28. Preetha Group Title

So you have three ways to do this. All are correct. You need to understand what Unkle did, what MSMR did and what I showed you. Can you try one on your own? We will help

29. snowballhockey Group Title

um ok