Answer:
12 x X x 1/2 = 54
12x x 1/2 = 54
x2 x2
12x = 108
divide by 12 on both sides:
X = 9
Let's double check!
9 x 12 = 108
108 divided by 2 = 54
IT WORKS!
Therefor your answer will be,
9!
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