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Nine less than the product of a number and 4

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Let the unknown number be x.

The question says "9 less than the product of a number and 4".

The product of the unknown number (x) and 4 is:


4* x=4x

Now, we are told that 9 is less than this product. This also implies that the product is greater than 9.

So we can write:


\begin{gathered} 9<4x \\ or \\ 4x>9 \end{gathered}

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