Question

When doing his homework, a student uses the addition property of equality to solve for c below. Which statement BEST applies to the sample?

6 + c = 10
6 + (–6) + c = 10 + (–6)
c = 4
A.
The student failed to keep both sides of the equation balanced.
B.
The student’s final answer does not have the variable c isolated.
C.
The use of the addition property of equality is sound, and the answer is correct.
D.
The student should have used the subtraction property of equality.

Answer 1

D