Question

Solve the equation for y. 7x - 3y = 4

Answer 1

Subtract 7x from both sides. What do you get?

Answer 2

-3y=-3

Answer 3

\[\huge \color{green}{\textbf{Welcome To Openstudy..}}\]

Answer 4

Not quite, the left side of your equation is correct but. On the right side, if you subtract 7x, wouldn't you have 4 - 7x?

Answer 5

can anyone help me

Answer 6

Do like this:

\[\large 7x - 3y - 7x = 4 - 7x\]

Now solve this..

Answer 7

whats the answer

Answer 8

There's not point in us telling you the answer, but we can help you to understand how to do it.

Answer 9

ok

Answer 10

You only need the answer??
Sorry we can't give you the answer itself and you have to cooperate with us to get your answer...

I have written the equation above..
What will you get by solving that??

Answer 11

Do you understand that you would get -3y = 4 - 7x ?? after subtracting 7x from both sides?

Answer 12

yes

Answer 13

@trany11 did u want the value of y in terms of x ??

Answer 14

so i add 4+-7x together

Answer 15

Okay, so that's always the first step when you're solving for x or y, get it alone by subtracting the other term from both sides. From here, do you have a guess at what you should do next to get just y = something?

Answer 16

You can 't add these..

See 4 and 7x are not like terms..

You can add 4 with 7,
you can add 4x with 7x but you can't add or subtract 4 and 7x..

Answer 17

-3y=-3x
is dhat right

Answer 18

Why are you solving right hand side??
Keep it as such you cannot solve this..

Answer 19

Not quite, at this point when you have a number attached to the term you want to get alone, in this case "y". You want to divide the other side by the number attached. So in this case, you want to divide both sides by -3, what do you get?

Answer 20

i got y=x-7x

Answer 21

again, your left side is correct but the right side is not. You're dividing *both* sides by -3 not just the left side. And dividing 4 by negative -3 doesn't equal x, right? What do you have when you divide (4-7x) by -3.

Answer 22

9x

Answer 23

Also, if something has an x attached to it, think of that as an apple. If it has a y attached think of that as a banana. And if neither x or y is attached think of that as an orange.

Answer 24

So you can't add an 2apple + 2orange and get 4apple. You just have 2apple and 2orange.

Answer 25

likewise if you divide 2apple/2orange you just have 2apple/2orange. Basically, x+x = 2x but x + 2 = x+2 not 2x or 2x/2 = 2x/2 not 1

Answer 26

so the answer is y=x+

Answer 27

Anyway, you'd end up having \[y = (4-7x)/-3 = -[(4-7x)/3)]\]

Answer 28

You should study combining like terms and such. Ask your teacher, you need to understand the basics before you can do later algebra.

Answer 29

which one is that y=x+....y=x+...y+x-

Answer 30

y = (4-7x)/-3

Answer 31

/ = divided by

Answer 32

heyy

Answer 33

what?

Answer 34

what is 23 x 45

Answer 35

You should use this technique: http://www.math-mate.com/chapter2_5.shtml Seriously, you will get nowhere by just getting answers, you have to try to understand why things are the way they are.