Question

Given equation A as 2x+1/4y=3 and equation B as 2/3x-y=6 , which expression will give the value of y?

Answer 1

\[2x+\frac{ 1 }{ 4 }=3 \]

Answer 2

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

Answer 3

equation A: subtract 1/4 y to both sides, then divide by 2. What do you get?

Answer 4

Thats where i get lost,i have no clue how to do this stuff

Answer 5

\[2x + \frac{ 1 }{ 4 } y -\frac{ 1 }{ 4 }y = 3 -\frac{ 1 }{ 4 } y\]
What's the answer?

Answer 6

well, simplify it down :)

Answer 7

ok,now how would i simplify that down? it looks easy but i dont get it

Answer 8

what is 1/4 y - 1/4 y?

Answer 9

is it just Y?

Answer 10

hm no,
for example, just assume that we know y = 4

so (1/4) *4 = 1, right?
1-1 = ?

Answer 11

0

Answer 12

yes, so,
1/4 y - 1/4 y = 0

Answer 13

\[ 3-\frac{ y }{ 4 }\]

Answer 14

No, hold on you're not done with equation A yet

Answer 15

thats what i got when i did it all out but it looks wrong

Answer 16

Ok, the old equation that we have was
\[2x +\frac{ 1 }{ 4 y }= 3\]
\[2x +\frac{ 1 }{ 4 }y -\frac{ 1 }{ 4 }y= 3 - \frac{ 1 }{ 4 } y\]
\[2x + 0= 3 - \frac{ 1 }{ 4 } y\]
Now you want x alone, so divide 2 to both sides.

Answer 17

so x+0=1.5-1/2y?

Answer 18

you can get rid of the 0 , it's extra space .
and no
\[1/5 - \frac{ 1 }{ 4} * \frac{ 1 }{ 2 }y\]
Revise your answer?

Answer 19

not the dash. 1.5, which is same as 3/2

Answer 20

8 - 5y
—— ?
40

Answer 21

no, it would be
\[x= 1.5 - \frac{ 1 }{ 8} y\]
Now leave equation A like that for now.
Simplify equation B

Answer 22

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

Answer 23

add y to both sides of equation B

Answer 24

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

Answer 25

the right side is wrong when you add 6 and y , it is the same as 6+y
6y means 6 * y

so it's
\[\frac{ 2 }{ 3 }x = 6+ y\]
Do you know what you should do to get x alone?

Answer 26

take 2/3 from both sides

Answer 27

multiply 3 to both sides, then divide 2 to both sides

Answer 28

x=9+y

Answer 29

A − 3B

A − B

2A − 3B

A + B are my answers

Answer 30

No,
\[x = \frac{ 3 }{ 2} (6+y)\]

Answer 31

then multiply 3/2 in for 6 and y, separately

Answer 32

\[x = \frac{ 18 }{ 2 } y + \frac{ 3 }{ 2 }y\]

Answer 33

Equation A
2x+1/4y=3

(3 -2 x)*4 = y = 12 - 8 x

Equation B
2/3x-y=6
-y = 6 - (2/3 )x
y = (2 x - 18)/3

question asked "which expression will give the value of y?"
do you have a choice of expressions for the answer?

It does not say solve for y when equation A = Equation B

Answer 34

sorry no y iin the 18/2

Answer 35

A − 3B

A − B

2A − 3B

A + B are the answer choices :( i have no clue what im doing

Answer 36

i got b :/

Answer 37

did you get the right answer or ...?
I'm trying to find a way to explain it out

Answer 38

i got it right..it was b

Answer 39

so thank you

Answer 40

it's actually A, when I solve everything out

Answer 41

my way was correct, just that you did not need to find y

Answer 42

@shadow.655

Answer 43

Hope that helps D:

Answer 44

ohh whoops,well its only one question.so thanks for your help