Question

polpak help me when you get a min

Answer 1

Hrm?

Answer 2

-5n-2(n+4)=-7n-8

Answer 3

Distribute the -2.

Answer 4

Then write the new form of the equation please.

Answer 5

what do you exsactly mean by distribute?

Answer 6

multiply?

Answer 7

I mean multiply it to each of the parts in parens:

a(b+c) = a(b) + a(c)

Answer 8

that is 'distribute'

Answer 9

Did you get stuck?

Answer 10

yes

Answer 11

Ok, lets take it slow and just work with the part we care about for now..

-2(n+4) = (-2)n + (-2)4

Answer 12

ok.

Answer 13

So what do we get when we do the multiplication?

Answer 14

divide

Answer 15

No, multiply.

(-2)n = -2n
(-2)4 = -8

Answer 16

ok

Answer 17

So -2(n+4) = -2n - 8

Answer 18

and putting that back into the original problem we have:

-5n -2n - 8 = -7n - 8

Answer 19

So we end up with:

-7n -8 = -7n -8

Answer 20

Which is what kind of equation?

Answer 21

identity

Answer 22

am I wrong?

Answer 23

No, you're right.

Answer 24

yay!!!!

Answer 25

You understand how to identify them, you just need to practice solving equations.

Answer 26

A lot of practice.

Answer 27

yeah I know

Answer 28

but you're doing well. If you'd like I can help you.

Answer 29

Did you get my email?