## Grazes 3 years ago If a is not 0, a/x=b/y, and a/2b=c(3*(x/y), what is the value of c?

1. Grazes

|dw:1344036321046:dw| Just the 2 equations on the top

2. lgbasallote

so $\huge a = \frac{bx}{y}$ agree?

3. Grazes

yep

4. lgbasallote

so if i substitute that into the second equation i will have $\huge \frac{\frac{bx}{y}}{2b} = \frac{3xc}{y}$ you following?

5. Grazes

yup

6. lgbasallote

so again i simplify $\huge \frac{bx}{2by} = \frac{3xc}{y}$ do you see the next step now?

7. Grazes

ohhh You can do that?

8. lgbasallote

which one?

9. Grazes

bx/y/2b=bx/2by

10. lgbasallote

$\huge \frac{\frac{bx}{y}}{2b} \implies \frac{bx}{y} \times \frac{1}{2b} \implies \frac{bx}{2by}$ see it now?

11. Grazes

Okay.

12. lgbasallote

so do you see what you can do in $\huge \frac{bx}{2by} = \frac{3xc}{y}$

13. lgbasallote

hint: think of cancellation

14. Grazes

I got 6xc=x

15. lgbasallote

you can simplify more

16. lgbasallote

both sides have x right?

17. Grazes

6c=0?

18. Grazes

c=0?

19. lgbasallote

x/x is 0?

20. lgbasallote

a number divided by itself is 0?`

21. lgbasallote

is 2/2 = 0? 3/3 = 0? 4/4 = 0?

22. Grazes

one.

23. Grazes

same thing :/

24. lgbasallote

right

25. lgbasallote

it's not same thing

26. lgbasallote

write it down and you'll see it's not the same thing

27. Grazes

1=0

28. Grazes

c=1/6, then.

29. lgbasallote

correct

30. lgbasallote

and 1 is not equal to 0

31. lgbasallote

anyway c = 1/6

32. Grazes

thanks

33. lgbasallote

welcome ^_^