How do you write a variable expression for the word phrase "9 less than k"?

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How do you write a variable expression for the word phrase "9 less than k"?

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Answer 1 · 2018-06-19T07:58:32

$k - 9$ $k-9$

Explanation:

The operand we use to express something "taken away" from something is the difference.

So, if we start from some number $k$ $k$ , $k - 1$ $k-1$ means that we took $1$ $1$ away from $k$ $k$ , so $k - 1$ $k-1$ is $1$ $1$ less than $k$ $k$ .

Going on, $k - 2$ $k-2$ is $2$ $2$ less than $k$ $k$ , and $k - 3$ $k-3$ is $3$ $3$ less than $3$ $3$ , because we took away $3$ $3$ from $k$ $k$ , and so on...

So, $k - 9$ $k-9$ is $9$ $9$ less than $k$ $k$ , since we took $9$ $9$ away from $k$ $k$

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How do you write a variable expression for the word phrase "9 less than k"?

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