17. n + 19 = 19 + n
n+1
7n = n°7
n-8=8-n
a. Identify the property being shown in these equations. (1 point)
1+n=
b. Identify the equation that does not use this property correctly and explain
why. (3 points)
c. Substitute n with a number to prove why Part B's equation does not work.
(2 points)
