Help please! Giving medal!

Which line shows the first error in the solution?

http://static.k12.com/bank_packages/files/media/mathml_09814ea50753a318955acdfa2c3f7743b12f8f2b_1.gif

A.
line 2

B.
line 3

C.
line 4

D.
line 5

Question

Help please! Giving medal! 

Which line shows the first error in the solution?

 http://static.k12.com/bank_packages/files/media/mathml_09814ea50753a318955acdfa2c3f7743b12f8f2b_1.gif
 
 A.
line 2
 
 B.
line 3
 
 C.
line 4
 
 D.
line 5

anonymous · Answer

Line two, but do you understand why? Cause if you don't I can explain it to you.

anonymous · Answer

Whoops sorry, I read the question wrong it's line 4.

anonymous · Answer

It's line 4 because you have to do the opposite for example because it says 6x which is multiplication, we should be dividing 12 by 6 not multiplying.