From the set {68, 69, 70}, use substitution to determine which value of x makes the equation true.
x + 2 = 70
We can substitute in each value from the set {68, 69, 70} and see which one makes the equation true:
1) 68 + 2 = 70 --> 70 = 70 (False)
2) 69 + 2 = 70 --> 71 = 70 (False)
3) 70 + 2 = 70 --> 72 = 70 (False)
Therefore, there is no value from the set {68, 69, 70} that makes the equation x + 2 = 70 true.