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Twice a number diminished from the quotient of 144 and the product of 3 and 4.
Twice a number diminished from the quotient of 144 and 12.
Twice a number diminished from the quotient of 144 and 12.
Twice a number diminished from 12.
Twice a number diminished from 12.
2x diminished from 12.
2x diminished from 12.
12 - 2x
Edwin