Use substitution to determine which number(s) from the set { 9, 12, 14 } make the equation 6x = 72 true
To determine which numbers from the set { 9, 12, 14 } make the equation 6x = 72 true, we can use substitution.
First, substitute each number one by one into the equation:
1. Substitute 9:
6(9) = 54 (not equal to 72)
2. Substitute 12:
6(12) = 72 (equal to 72)
3. Substitute 14:
6(14) = 84 (not equal to 72)
From this calculation, we can see that only the number 12 from the set { 9, 12, 14 } makes the equation 6x = 72 true.