Given: X over 6 + 2 = 15
Prove: X = 78
X over 6 + 2 = 15 a. ______
X over 6 = 13 b. ______
X = 78 c. ______
[ x / 6] + 2 = 15 Given
[ x / 6 ] + 2 - 2 = 15 - 2 Subtraction Property of Equality
[x/ 6] = 13
6 [ x/ 6] = 6 * 13 Multiplication Property of Equality
x = 78
+177 
