Question

Evaluate 3x-y-2z if x = 2, y = 1, and z = -2. Now determine two common mistakes that can be made when evaluating expressions and how you can prevent them

Answer 1

9. Distributing the signs and pemdas.

Answer 2

Can you help me evaluate it?

Answer 3

3x-y-2z
=3(2)-1-2(-2)
=6-1+4
=9
Did that make more sense?

Answer 4

kind of, but could you go through the steps for me, like explain what you did?