# How do you evaluate xy - z, when x = -2, y = 3 and z = 1?

##### 2 Answers

Mar 10, 2018

#### Answer:

#### Explanation:

#"substitute the given values into the expression"#

#rArrxy-z#

#=(color(red)(-2)xxcolor(blue)(3))-color(magenta)(1)#

#=-6-1=-7#

Mar 10, 2018

#### Answer:

#### Explanation:

When given an algebraic equation, we simply plug in the values.