To solve the equation 6x=72 using substitution, we need to substitute each number from the set {9, 12, 14} one at a time for the variable x and see which one makes the equation true.
If we substitute 9 for x, we get:
6(9) = 54 (not equal to 72)
If we substitute 12 for x, we get:
6(12) = 72 (equal to 72)
Therefore, 12 is the number from the set {9, 12, 14} that makes the equation 6x=72 true.
If we substitute 14 for x, we get:
6(14) = 84 (not equal to 72)
So, the only number that makes the equation 6x=72 true is 12.
Use substitution to determine which number(s) from the set {9, 12, 14} make the equation 6x=72 true.
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