Question

Evaluate the following expression using the values given.
Find 2x − 3y − z if x = −2, y = 3, and z = −2

−11

11

−15

15

Answer 1

just plug it in,

2(-2) - 3(3) -(-2) = -4-9+2 = -11

Answer 2

plug in the numbers
2(-2) - 3(3) - (-2)
-4 - 9 + 2 = -11

Answer 3

Subsitution...

2(-1) - 3(3) - (-2)

The use of ( ) whenever you substitute is important and a good practice to get into the habit of doing now. :-)

Answer 4

-11 is answer