anonymous 4 years ago 4(j-7)=12

1. anonymous

@Butterfly16

2. jim_thompson5910

Hint: either distribute to get 4j - 28 = 12 or divide both sides by 4 to get j - 7 = 3

3. anonymous

Wouldn't it be 4j-28=12

4. jim_thompson5910

thats one way to go, what do you get when you solve that

5. anonymous

Yeah

6. anonymous

7. geerky42

Yes.

8. geerky42

Then divide both sides by 4.

9. anonymous

Ok thank you :)

10. geerky42

11. anonymous

7(2p+3)-8=6p+29

12. anonymous

14p+21-8=6p+29 ?

13. jim_thompson5910

good so far

14. jim_thompson5910

what's next

15. anonymous

Subtract 6p?

16. jim_thompson5910

yep

17. jim_thompson5910

14p+21-8=6p+29 14p+21-8 - 6p = 29 then what

18. anonymous

8p+21-8=29?

19. jim_thompson5910

good, next step?

20. anonymous

21. jim_thompson5910

or you can combine 21-8 to get 13 this gives you 8p+13 = 29 then you can subtract 13 from both sides to get 8p = 29-13

22. anonymous

Ohh

23. jim_thompson5910

so 8p = 16 p = ??

24. anonymous

2

25. jim_thompson5910

you got it

26. anonymous

:)

27. anonymous

3x-9=7.5+5x

28. anonymous

Butterfly!! :)

29. anonymous

Haha here I am :o) 3x-9=7.5+5x What do we do first? I know you know it :o)

30. anonymous

subtract 5x?

31. anonymous

Think of it like this: 3-5 or 5-3? :o)

32. anonymous

5-3

33. anonymous

-9=7.5+2x

34. anonymous

Fantastic! Now, solve for x! Tell me what you do next :o)

35. anonymous

36. anonymous

Nope. Remember, when you take from one side, you must take from the side with the x. So instead, take the 7.5 from the side with the x. :o)

37. anonymous

Ohh so -7.5

38. anonymous

You got it! :o)

39. anonymous

x=-8.25

40. anonymous

Great job! I knew you could do it. :o)

41. anonymous

a-5/10=2a-3/5

42. anonymous

a=1/10

43. anonymous

$\frac{ a-5 }{ 10 }=\frac{ 2a-3 }{ 5 }$ Cross multiply :o) $10(2a-3)=5(a-5)$ Distribute $20a-30=5a-25$$15a-30=-25$$15a=5$$a=\frac{ 5 }{ 15 }$$a=\frac{ 1 }{ 3 }$ Do you see how I got that? :o)

44. anonymous

Wait which do I cross multiply?

45. anonymous

For the original equation, you're first going to cross multiply. So, a-5 times the 5, and then the 2a-3 times the 10.

46. anonymous

I'm still not seeing it :/

47. anonymous

I have some family coming over in 15 minutes and I have to go with them to town. Will you be on later so we can do this later?

48. anonymous

Yup, I'll type up some instructions on that one and message it to you for when you get back. :o)

49. anonymous

Ok thank you! Talk t you soon :)