Can somebody please check if I solved this correctly? Problem: Sammy incorrectly solves the equation 1/3(x+9)=8. Her work is shown below.
A.
Which step shows an error based on the equation only from the previous step? Select all that apply.
A) Step 1: 1/3x + 9= 8
B) Step 2: 1/3x = 8+9
C) Step 3: 1/3x = 17
D) Step 4: x= 5 2/3
B.
What is the correct solution to the original equation? My answer: x=15
My work:
1/3(x+9)=8
1/3x + 3= 8
1/3x + 3 - 3= 8-3= 5
1/3x= 5
5* 3/1= 15/1
x=15

Question

Can somebody please check if I solved this correctly?                                   Problem:  Sammy incorrectly solves the equation 1/3(x+9)=8. Her work is shown below. 
 A.
 Which step shows an error based on the equation only from the previous step? Select all that apply. 
    A) Step 1: 1/3x + 9= 8
    B) Step 2: 1/3x = 8+9
    C) Step 3: 1/3x = 17
    D) Step 4: x= 5 2/3
B.
What is the correct solution to the original equation? My answer: x=15
My work: 
1/3(x+9)=8
1/3x + 3= 8
 1/3x + 3 - 3= 8-3= 5
 1/3x= 5
  5* 3/1= 15/1
  x=15

anonymous · Answer

I already did A i just want to know if I solved B correctly

shirley27 · Answer

Yes i think you did

anthonyym · Answer

Yes you did it right. 
For equations you can plug the value of x you found back into the equation to check if it you did it right.

anthonyym · Answer

And also you should right (1/3)x because writing 1/3x might make someone look at it as 1/(3x)

anonymous · Answer

thanks @Shirley27 and @anthonyym I appreciate your help!

anthonyym · Answer

Your're welcome:)