Complete the two-column proof.
Given: x over 6 plus 2 equals 15
Prove: x = 78
x over 6 plus 2 equals 15 a. __________
x over 6 equals 13 b. __________
x = 78 c. ___________
(3 points)
a. Subtracting 2 from both sides, we get: x/6 = 13
b. Multiplying both sides by 6, we get: x = 78
c. Therefore, x = 78