# Expressions

Let k represent an unknown number, express the following expressions:

1. The sum of the number n and two
2. The quotient of the number n and nine
3. Twice the number n
4. The difference between nine and the number n
5. Nine less than the number n

Result

k1 = (Correct answer is: n+2)
k2 = (Correct answer is: n/9)
k3 = (Correct answer is: 2n)
k4 = (Correct answer is: 9-n)
k5 = (Correct answer is: n-9)

#### Solution:

$k_{ 1 } = n+2$
$k_{ 2 } = n/9$
$k_{ 3 } = 2n$
$k_{ 4 } = 9-n$
$k_{ 5 } = n-9$

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Math student
km=45?.

#### Following knowledge from mathematics are needed to solve this word math problem:

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