## anonymous one year ago Will medal and fan! I need help on a K12 Math assessment it's 9:00 pm and Ive been trying to complete this all day :( please help here is picture of problem http://i.imgur.com/A9RtbOe.jpg

1. anonymous

if anyone could help me with this that would be great Ive done it 2 times and got bad grades both times

2. anonymous

multiply both sides by 5 to clear the annoying fraction

3. anonymous

the parentheses on the left side and on the right side?

4. anonymous

you should get $2x-15+3x=21\tfrac{1}{4}$ now at least the fractions on the left are gone

5. anonymous

yes left and right

6. anonymous

okay

7. anonymous

now combine like terms on the left, i .e. add $$2x+3x$$

8. anonymous

okay 5x

9. anonymous

so now we are at $5x-15=21\tfrac{1}{4}$ add 15

10. anonymous

sorry if my spelling or grammer is a bit off im really tired right now :|

11. anonymous

what are we adding 15 to

12. anonymous

no one here is a grammarian (least of all me)

13. anonymous

the math teaches say "add it to both sides" but you really add it to the right to get rid of the -15 on the left

14. anonymous

oh ok yes I think

15. anonymous

5x = 21 1/4 is left

16. anonymous

no

17. anonymous

oh ok

18. anonymous

you need to add the 15 to the right as well

19. anonymous

5x = 36 1/4

20. anonymous

$5x=36\tfrac{1}{4}$

21. anonymous

yeah that i hate mixed numbers now divide by 5

22. anonymous

divide what by 5 sorry again

23. anonymous

5/5 ?

24. anonymous

you have $5x=36\tfrac{1}{4}$ and you want $x=\text{sommat}$ to get there you have to divide both sides by 5

25. anonymous

i.e. $x=36\tfrac{1}{4}\div 5$

26. anonymous

7 1/4 right?

27. anonymous

yup

28. anonymous

:D THANK YOU!

29. anonymous

yw you got more? i noticed you were on a deadline

30. anonymous

That was actually the last question of the assessment i can tell you how i did tho

31. anonymous

saved the best for last i guess

32. anonymous

Ya

33. anonymous

is it a placement test?

34. anonymous

k12 is a bit wierd you take a small test to see if you learned everything correctly from the lesson before it after you go through the lesson.

35. anonymous

ugh

36. anonymous

By the way I got 5/5 :)

37. anonymous

Thank you again

38. anonymous

that is good! guess you got the first 4 on your own yw

39. anonymous

ya ^-^