## foreverkamixo 2 years ago 4(j-7)=12

1. foreverkamixo

@Butterfly16

2. jim_thompson5910

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

3. foreverkamixo

Wouldn't it be 4j-28=12

4. jim_thompson5910

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

5. foreverkamixo

Yeah

6. foreverkamixo

7. geerky42

Yes.

8. geerky42

Then divide both sides by 4.

9. foreverkamixo

Ok thank you :)

10. geerky42

11. foreverkamixo

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

12. foreverkamixo

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

13. jim_thompson5910

good so far

14. jim_thompson5910

what's next

15. foreverkamixo

Subtract 6p?

16. jim_thompson5910

yep

17. jim_thompson5910

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

18. foreverkamixo

8p+21-8=29?

19. jim_thompson5910

good, next step?

20. foreverkamixo

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. foreverkamixo

Ohh

23. jim_thompson5910

so 8p = 16 p = ??

24. foreverkamixo

2

25. jim_thompson5910

you got it

26. foreverkamixo

:)

27. foreverkamixo

3x-9=7.5+5x

28. foreverkamixo

Butterfly!! :)

29. Butterfly16

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

30. foreverkamixo

subtract 5x?

31. Butterfly16

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

32. foreverkamixo

5-3

33. foreverkamixo

-9=7.5+2x

34. Butterfly16

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

35. foreverkamixo

36. Butterfly16

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. foreverkamixo

Ohh so -7.5

38. Butterfly16

You got it! :o)

39. foreverkamixo

x=-8.25

40. Butterfly16

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

41. foreverkamixo

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

42. foreverkamixo

a=1/10

43. Butterfly16

$\frac{ a-5 }{ 10 }=\frac{ 2a-3 }{ 5 }$ 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. foreverkamixo

Wait which do I cross multiply?

45. Butterfly16

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. foreverkamixo

I'm still not seeing it :/

47. foreverkamixo

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. Butterfly16

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

49. foreverkamixo

Ok thank you! Talk t you soon :)