Question

Evaluate the following expression using the values given:

Find 2x − 3y − z if x = −2, y = 3, and z = −2

A −11
B 11
C −15
D 15

Answer 1

Hey there! :)

2x - 3y - z ; When x = -2, y = 3, & z = -2

Since we're given the values of x, y, & z, we can very simply plug everything in!

2(-2) - 3(3) - (-2)

Simplify.

(-4) + (-9) + 2

Get rid of parenthesis.

-4 - 9 + 2

Remember to do PEMDAS!

Parenthesis
Exponents
Multuply
Divide
Add
Subtract

So, since adding comes before subtracting, let's add! :)

-4 - 9 + 2

-4 - 7

Simplify.

-11

So, our answer is [A] : -11

~Hope I helped!~