Question

is there someone there that can tutoring

Answer 1

On what subject?

Answer 2

in intro to intermediate algebra

Answer 3

Probably.. What sorts of questions did you have?

Answer 4

Alright, let's give it a try, tell us what you're having troubles with?

Answer 5

-5x=-30

Answer 6

Ok, so this is saying that -5 times x is -30.. Right?

Answer 7

yes

Answer 8

x is what we call a dummy variable here. - 5 x = - 30 is the same as -5 & = -30 or -5 $ = -30, it's the same as asking, what number times -5 is - 30.
x = 6

Answer 9

i got x=25
is that right

Answer 10

No, what number times -5 is - 30. You have to divide - 30 by -5 .

Answer 11

No. The trick with the equations is the idea that you can do something to both sides and maintain the equality.

Answer 12

x = 6
- 5 * 6 = -30

Answer 13

So if you (for example) divide both sides by 5 what happens?

Answer 14

What is \[-5x \div 5 ?\]

Answer 15

ok! -1

Answer 16

-1x

Answer 17

ok anna i can see that but how to work it out

Answer 18

\[-5x \div 5 \]\[= \frac{-5x}{5} \]\[= \frac{-5}{5}(x)\]\[=-x\]

Answer 19

You have -5 times x divided by 5.

Answer 20

You have to divide both sides by -5.
Like pol just showed.

Answer 21

So then on the other side dividing -30 by 5 you get?

Answer 22

-6

Answer 23

right. So -x = -6. What must x be?

Answer 24

If you like I can show you interactively.. Sometimes that helps with this sort of thing.

Answer 25

ok

Answer 26

http://www.twiddla.com/561414

Go here.

Answer 27

ok

Answer 28

going now

Answer 29

kissmymath.com <Check it. :)

Answer 30

ok

Answer 31

is aroub there