Question

Help me! I will medal and fan, only one question!

Answer 1

Evaluate the following expression using the values given:

Find 5x − 3y − z if x = −2, y = 2, and z = −3

−19
19
13
−13

Answer 2

I know that first, I would fill in the blanks.

Answer 3

5x-2-3x2- (-3)

Answer 4

Do you need me to explain it, or to just give you an answer?

Answer 5

I do not want an answer, I just want someone to kind-of watch my work, so that I know I am solving it the right way. Asking for the answer would be against openstudy policies...

Answer 6

Like integer rules?

Answer 7

first, I would solve the multiplication, so 5x-2=-10, and 3x2=6, so
-10-6-(-3), right?

Answer 8

Yes that's correct!

Answer 9

okay.. next, it would become -16- (-3), right, since we subtract 6 from -10?

Answer 10

Yep :)

Answer 11

then it would become -19??

Answer 12

@MichaelAlex292

Answer 13

Not quite... use your integer rules

Answer 14

-13?

Answer 15

Yes, now do you why?

Answer 16

not really, both are negative, and we are not multiplying?

Answer 17

Take this as an example:

Answer 18

6 - (-3)
When there are 2 minus signs, you add
6 + 3

Answer 19

Now look at the one we were working on above

Answer 20

-16 - (-3) = -16 + 3 = -13

Answer 21

oh they cancel eachother out?

Answer 22

See it now?

Answer 23

Yea, the 2 minus signs form a plus

Answer 24

yes

Answer 25

Great!

Answer 26

can u help with one more? Again, I dont want an answer, I want help

Answer 27

Ok

Answer 28

Evaluate the following: −3 − (−2).

−5
−1<< I followed same rule as last time...
1
−6

Answer 29

Wow, great job:\[-3 - (-2) = -3 + 2 = -1\]
You are correct!

Answer 30

ok, thanks!

Answer 31

No problem