## anonymous one year ago The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below: Step 1: 2(3x − 4) = 8 + 2x + 4 Step 2: 5x − 6 = 12 + 2x Step 3: 5x − 2x = 12 + 6 Step 4: 3x = 18 Step 5: x = 6 In which step did the student first make an error and what is the correct step? Step 2; 6x − 6 = 2(6 + x + 2) Step 2; 6x − 8 = 12 + 2x Step 3; 5x − 2x = 12 − 6 Step 3; 5x + 2x = 12 + 6

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1. anonymous

2. anonymous

Step 1: 2(3x − 4) = 8 + 2x + 4 Step 2: 5x − 6 = 12 + 2x Step 3: 5x − 2x = 12 + 6 Step 4: 3x = 18 Step 5: x = 6

3. anonymous

The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below: Step 1: 2(3x − 4) = 8 + 2x + 4 Step 2: 5x − 6 = 12 + 2x Step 3: 5x − 2x = 12 + 6 Step 4: 3x = 18 Step 5: x = 6 In which step did the student first make an error and what is the correct step? Step 2; 6x − 6 = 2(6 + x + 2) Step 2; 6x − 8 = 12 + 2x Step 3; 5x − 2x = 12 − 6 Step 3; 5x + 2x = 12 + 6

4. LynFran

2(3x-4)=8+2x+4 6x-8=12+2x 6x-2x=12+8 4x=20 x=20/4 x=5 this is how this question shd be worked...

5. anonymous

thanks can you help me with another

6. LynFran

sure

7. anonymous

Which of these is a simplified form of the equation 6y + 4 = 8 + 2y + 2y? 6y = 8 10y = 12 2y = 4 4y = 12

8. LynFran

6y+4=8+2y+2y 6y+4=8+4y 6y-4y=8-4 2y=4 y=4/2 y=2

9. LynFran

can u see it??

10. LynFran

check the working i just did and look for the answer

11. LynFran

correct

12. anonymous

thanksss can u help with more

13. LynFran

sure

14. anonymous

How many solutions does the equation −3a + 3a + 6 = 7 have? One Two Infinitely many None

15. LynFran

-3a+3a=0 so none

16. anonymous

What is the solution to the equation 1.6m − 4.8 = −1.6m? m = 0.5 m = 0.7 m = 1.5 m = 3

17. LynFran

the a term cancel out each other

18. LynFran

1.6m-4.8=-1.6m 1.6m+1.6m=4.8 3.2m=4.8 m=4.8/3.2 m=1.5

19. anonymous

wowww ur amazing

20. anonymous

would i be pushing it if i ask for more help?

21. LynFran

nah

22. anonymous

What is the value of x in the equation −6 + x = −3? −9 −3 3 9

23. anonymous

aye u got insta?

24. LynFran

-6+x=-3 x=-3+6 x=3

25. anonymous

What is the value of x in the equation −x = 4 − 3x + 6? 5 10 −5 −10

26. anonymous

Which statement is true about the equation fraction 3 over 4z = fraction 1 over 4z − 3 + 5? It has no solution. It has one solution It has two solutions. It has infinitely many solutions.

27. LynFran

-x=4-3x+6 -x=10-3x -x+3x=10 2x=10 x=5

28. anonymous

so D?

29. LynFran

What is the value of x in the equation −x = 4 − 3x + 6? x=5

30. LynFran

$\frac{ 3 }{ 4z }=\frac{ 1 }{ 4z }-3+5$ is this the correct question/equation

31. anonymous

How many solutions does the equation 6a − 3a − 6 = −2 + 3 have? Two None One Infinitely many

32. LynFran

im talking about this question we havent started as yet What is the value of x in the equation −x = 4 − 3x + 6? It has no solution. It has one solution It has two solutions. It has infinitely many solutions.

33. LynFran

so this was the question Which statement is true about the equation fraction 3 over 4z = fraction 1 over 4z − 3 + 5?

34. LynFran

we havent started the above question as yet

35. LynFran

but for this question How many solutions does the equation 6a − 3a − 6 = −2 + 3 have? the answer is one

36. anonymous

thxs

37. anonymous

What is the value of z in the equation 2(4z − 3 − 1) = 166 − 46? 14 15 16 17

38. LynFran

2(4z-3-1)=166-46 8z-6-2=120 8z=120+8 z=16

39. anonymous

hey can u help with more

40. LynFran

ok 3more but you have to look at the pattern of my solution when it comes to solving equation ok

41. anonymous

k thxs

42. anonymous

How many solutions does the equation −3y + 3y + 4 = 4 have? Zero Infinitely many One Four

43. LynFran

-3y+3y+4=4 and -3y+3y=0 so no solution

44. vheah

The student committed an error on Step 2 because instead of multiplying 2 to 3x the student ended up adding the two, getting 5x. Correct step is 6x-8 = 12x + 2x