To use substitution, we need to substitute each number from the set [9, 12, 14] into the equation 6x = 72 and see which numbers make the equation true.
1. Substitute 9 into the equation:
6(9) = 54 ≠ 72
So, 9 does not make the equation true.
2. Substitute 12 into the equation:
6(12) = 72
Here, the equation holds true when x = 12.
3. Substitute 14 into the equation:
6(14) = 84 ≠ 72
So, 14 also does not make the equation true.
Therefore, the only number from the set [9, 12, 14] that makes the equation 6x = 72 true is x = 12.
use the subtituition to determine which numbers from the set [9,12,14] make the equation 6x equals 72 true
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