Question

Evaluate the following expression using the values given:

Find 3x - y - 3z if x = -2, y = 1, and z = -2.

Answer 1

Here, you have to just plug in the values..

Where you are seeing x, just put -2 there, similarly, where y put 1 and where you are seeing z, just put -2 there...

Answer 2

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

Answer 3

See the red part and plug in the values:
\[\large 3 \color{red}{x} - \color{red}{y} - 3 \color{red}{z}\]

Answer 4

3(-2)-1-3(-2)? after i multiply do i just subtract

Answer 5

Firstly multiply and then show us where you have reached...

Answer 6

-6-1-(-6)?

Answer 7

- multipy by - =+
so -6-1+6=

Answer 8

-1

Answer 9

multiply?

Answer 10

What???

Answer 11

what do i multiply with

Answer 12

You have done multiplication there I think..

-6 -1 -(-6)

Now do you know -(-6) = ??

Answer 13

do i subtract it all or add the 6's and subtract 1

Answer 14

I am asking you just -(-6) = ??

Answer 15

-1

Answer 16

How??

Answer 17

-6-1-(-6)=-1

Answer 18

See, -(-) = +

So, -(-6) = +6

So now: you have : -6 -1 - (-6)
-6 -1 + 6

Answer 19

its still negative 1

Answer 20

Yes, entire simplification will give you -1, you are right... Good!!

Answer 21

thank you

Answer 22

You are welcome dear...