# How do you evaluate the expression when y=3 and x=27 for x-6y?

Nov 17, 2016

$9$

#### Explanation:

To evaluate, substitute the $x$ and $y$ in the question with the numbers.

In the expression, $x$ is equivalent to 27,

and $6 y$ is equivalent to $6 \times y$, which is $6 \times 3 = 18$

So, $x - 6 y$

$= 27 - 6 \times 3$

$= 27 - 18$

$= 9$