Question

I haven't done literal equations in a year so I totally forgot. I ALWAYS get overwhelmed by all of the things to do and by what order to do them in! Can someone help me? *My teacher also says that I have to factor binomials (and trinomials I'm guessing) so keep that in mind*
xx

Answer 1

Can you give me an example?

Answer 2

ok one second

Answer 3

g=5x+xy+7y solve for x

Answer 4

In terms of g and y?

Answer 5

yeah

Answer 6

ok 1sec

Answer 7

so bunch all the x's on one side. in this case, can be done by subtracting 7y to the left side, and you now have g-7y=5x+xy.

Answer 8

now factor out x from the left side. now it looks like: g-7y=x(5+y)

Answer 9

divide by (5+y) and you have (g-7y)/(5+y)=x

Answer 10

That answer your question?

Answer 11

Yup! I get it! Can you solve this example too?
2y - 2/3x + 6 = 0 solve for y

Answer 12

can you put in the () where they go, b/c that could either be (2y-2)/(3x+6)=0 or 2y-(2/3)x+6=0

Answer 13

the second one

Answer 14

OK. You try it first, or at least tell me where you're getting stuck. I feel like I'm giving you all the answers, and I want you to learn something not just copy all the answers down

Answer 15

Actually I'm doing them and then comparing your work to mine xD But cool here's my work:
So I start with 2y-2/3x+6=0. I move over the 6 to the other side. 2y-2/3x=-6. I add -2/3x on both side to move it. 2y=-6+2/3x. I divide everything by 2. y=-3+1/3x. I'm really not sure how to divide a fraction so I just thought. What's half of 2/3? 1/3! Is that right?
here's my final answer: y=-3+1/3x

Answer 16

Yes, it is. Dividing fractions is very easy though, and you should know how to do it.

Answer 17

1/2 * 1/2 is what?
1/2 divided by 1/2 is what?

Answer 18

I know it's like multiply by negative reciprical but I don't get it very much :/

Answer 19

not negative reciprocal just reciprocal :)

Answer 20

1/2 by 1/2 is 1/4. 1/2 divided by 1/2 is 1?

Answer 21

yes. so what's 45/79 divided by 11/37?

Answer 22

and while you're at it, what's 3 and 4/5 divided by 5/6?

Answer 23

Holy crap. Um, 1665/869? Do you mean 3 divided by 5/6 and 4/5 divided by 5/6? or 19/5 divided by 5/6?

Answer 24

the 2nd one.

Answer 25

114/25?

Answer 26

So I just cross-multiply basically?

Answer 27

it's a lot easier if you just flip the fraction you're dividing by and multiply.

Answer 28

But yes, essentially the same thing.

Answer 29

so do that in the previous problem 2/3 divided by 2.

Answer 30

2/3 times 1/2 is 2/6. Simplified is 1/3. Okay! Well I got it right with my reasoning anyway but thanks for that! I really needed to know that(:

Answer 31

great! i'm glad i could help.

Answer 32

So did I get that first problem right? The one I explained step by step?

Answer 33

Yes. You should have more confidence in your math skills. once you learn the basic equations and formulas, it's really easy.

Answer 34

Ahaha thanks(: I just have a quiz tomorrow and I have the WORST memory. Let me see if I have this right- point slope form is y-y1=m(x-x1). Standard form is Ax+By=C *no fractions, x must be positive*. Direct variation y=kx k=y/x (use proportions). Inverse variation y=k/x k=yx. Literal equations factor binomials, to divide fracions multiply by reciprocal. AND THERE'S MY WHOLE NIGHT(:

Answer 35

yeah :). keep in mind for the variation stuff all you really need to memorize is y=kx and k=yx for direct and inverse variation, respectively. from there you can divide by x by direct var. and get k=y/x or divide by x by inverse var. and get y=k/x.

Answer 36

So basically dir. var. is y=kx. In. var. is y=k/x right?

Answer 37

or k=yx. same thing.

Answer 38

for which inverse variation?

Answer 39

yeah

Answer 40

k=yx
divide by x
k/x=y
Same thing!

Answer 41

AND I'm done studying for the night.(: I'll be back soon ahaha

Answer 42

Thank you SOOOOO much you have no idea what this means to me (:

Answer 43

no problem. happy to help!