Question

SAT MATH LEVEL 2

Answer 1

\[\frac{ 6 }{ x } + \frac{ 3 }{ y }=4 \]

Answer 2

and

Answer 3

\[\frac{ 3 }{ x }+\frac{ 6 }{ y }=\frac{ 7 }{2 }\]

Answer 4

What is the value of xy? not x and y only xy

Answer 5

for the first one:

6(1/x + 1/2y)=2/3

Answer 6

you're solving for xy right

Answer 7

exactly

Answer 8

lets try this first equation --> y = 4/3 -2x and will input that in to the bottom equation to get 3/x + 6/(4/3-2x) = 2/3 and solve for x

Answer 9

ok

Answer 10

= 7/2 not 2/3

Answer 11

I don't understand a part

Answer 12

3/x + 6/(4/3-2x) = 7/2

what is that 6 doing there?

Answer 13

are this two separate questions or are the equation part of the same question?

Answer 14

the equations are part of the same question. I believe we have to use the method of substitution. I am not sure how.

Answer 15

give me sec

Answer 16

ok

Answer 17

lets start from scratch, I messed up. the first equation is y = 4/3 -2x ---> we subtracted 6/x out and then divided by 3

Answer 18

now where back to the same equation the 6 is there because in your second equation y is under a 6

Answer 19

wait a second, for the first equation, it must be

1/y = 4/3 - 2x

Answer 20

you wrote y

Answer 21

divide by one again

Answer 22

how is it possible?

1/1 . 1/y = 4/3 - 2x

1 at the bottom cancels out the 1 at the top. so

1/y = 4/3 - 2x

Answer 23

lets find a different way then

Answer 24

I believe we have to divide both equations by a constant term which would be 3

Answer 25

(6/x+3/y=4) -2(3/x+6/y =7/2) this will elemenate the x value

Answer 26

Ok wait, this is the answer key:

the answer:

2/x and 1/y = 4/3

1/x + 2/y = 7/6

y = 3 and x = 2
xy=6

Answer 27

follow me we're on the right track

Answer 28

Ok you have the answer. I know that at the begining we have to divide both equations by the value of 3. show me how you get y=3 and x=2

Answer 29

so from the equation you should get 1/y = 1/3 so then multiply by y and you'll have 1= y/3 so then multiply by 3 which will give you y = 3

Answer 30

how did you get 1/y = 1/3

Answer 31

did you divide by the 9

Answer 32

-9/y = -3 ---> 1/y = 1/3 --> y = 3

Answer 33

are saying all this from the answer key I provided you?

Answer 34

or your own way

Answer 35

my own, I followed the equation

Answer 36

still gives the same answer

Answer 37

you followed the equation from the answer key or the original equation?

Answer 38

original equation

Answer 39

Ok, let me put all the steps into one. If I have further equestions. I will tag you here.

Thanks a lot :)