Question

a= 2 (b+c) solve for c

Answer 1

Ready to work on this together? Just lemme know when you're ready. :P

Answer 2

yes I am

Answer 3

Awesome. Let's do it then :D

Answer 4

First problem is that our C is stuck inside a parenthesis. How do we help it escape the parenthesis?

Answer 5

(Don't worry about your other questions yet. We'll work on those when we finish this one)

Answer 6

ok use distribute?

Answer 7

Yup! So what do you get?

Answer 8

a= 2b + 2c

Answer 9

a= 2 (b+c)
a = 2b + 2c
Good!
So now what do we do to further get the C closer to being by itself?

Answer 10

Hint: There's a 2b and a 2 attached to the C. Is it easier to divide stuff? Or to subtract stuff?

Answer 11

divide

Answer 12

To be honest, I think subtraction's easier. BUT, it works both ways. So what are we left with after dividing by 2?

Answer 13

Whoops... gave away the number. But you were going to divide by 2 anyway, right?

Answer 14

so it cancels out right?

Answer 15

Well, the 2s cancel out. But don't forget: if you divide one side by two, you must do the same to the other.

But, would you like to see an easier way?

Answer 16

yes

Answer 17

Okie dokie. When you were at this step: a = 2b + 2c
It'd be easier to make the 2b go to the other side. How can we move it to there?

Answer 18

Hint: if you try dividing, you'd be left with a/2b = 2c/2b+1 So... you can tell you don't want to divide.

Answer 19

Still here roseanne? I can tell you what to do if it's confusing.

Answer 20

no I understand

Answer 21

How am I going to know that on my midterm

Answer 22

im just wanting to understand

Answer 23

Okie dokie. So what do we do with a = 2b + 2c to isolate the 2c further?

Answer 24

subtract

Answer 25

That's right :D
Now that we have
-2b + a = 2c, what is our final step?

Answer 26

Hint: It's easier if you view it with parentheses:
(-2b + a) = 2c

Answer 27

So let's do that last step and go onto the other questions.

Answer 28

Still here roseanne? Just tell me what the final step is and we can get crackin' on the next few questions. These will be a lot easier since you'll know the steps.