Question

A student attempts to solve for c in the equation below. Which statement best applies to the work shown below?
http://media.education2020.com/evresources/2003-03-03-00-00_files/i0140000.jpg

Answer 1

A.
The student followed all rules correctly and solved for c.
B.
In step 2 of the student’s work they made a mathematical error.
C.
The student’s answer is negative but it should be positive.
D.
The student combined like terms incorrectly in step 1.

Answer 2

I say it is a?

Answer 3

3c + 6 - 4c = 12c + 7
-c + 6 = 12c + 7
-c + 6 - 6 = 12c + 7 - 6
-c = 12c + 1
-c - 12c = 1
-13c = 1
c = -1/13

I agree with your answer.....it is A