Both Adler and Erika solved for k correctly because either the addition property of equality or the subtraction property of equality can be used to solve for k .
B
Only Adler solved for k correctly because the inverse of addition is subtraction.
C
Neither student solved for k correctly because k is equal to 2 and 1 eighth .
D
Only Erika solved for k correctly because the opposite of 1 half is negative 1 half .