what does it mean to solve the equation for M then find the value of M in each N

- anonymous

what does it mean to solve the equation for M then find the value of M in each N

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- anonymous

do you have an example to go by?

- anonymous

yes hold on

- anonymous

\[M+3n=7n\]

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## More answers

- anonymous

\[-2,0,1\]

- anonymous

that is the end of it

- phi

solve for M means "get M alone on one side" of the equal sign

- anonymous

i know that part i ment the part about the N

- phi

what do you get when you solve for M in this:
M+3n=7n

- anonymous

ok so to solve for M in M+3n=7n
you have to leave M by itself M=7n-3n
then once you have M by itself you can plug in what you got for M then solve
7n-3n+3n=7n
everything cancels out therefore it means that it is exact opposite

- anonymous

do you understand what i tried to say? if not let me know

- anonymous

huh

- anonymous

when u solve for m you have 7n-3n right?

- anonymous

yes

- anonymous

then it ends up being M=10 right

- anonymous

ok now plug in what you got for M
you end up with 7n-3n+3n=7n

- anonymous

how did u get 10?

- anonymous

i divdied 10 from each side

- anonymous

never mind that the wrong prblem

- anonymous

ugh i suck at this

- anonymous

@mathway

- anonymous

@mathmate

- anonymous

Is it n= -2, 0, 1?

- anonymous

yes

- anonymous

\(M+3n=7n\)
Subtract 3n on both sides.
What would you get?

- anonymous

with the M or with the 3 and 7

- anonymous

|dw:1442259219366:dw|

- anonymous

|dw:1442259332544:dw|

- anonymous

7n

- anonymous

Okay, so M= 4n. not 4.

- anonymous

yes 4n

- anonymous

no wait just 4

- anonymous

What? Can you copy and paste your problem again?

- anonymous

yes

- anonymous

Please do so because it's confusing. :)

- anonymous

\[m+3n=7n=-2,0,1\]

- anonymous

Hang on. It is
\(m+3n=7\) and \(n=-2, 0, 1\)
correct?

- anonymous

yes \[7n\]

- anonymous

I don't get you. You said yes, then you contradicted me and said \(7n\).
AGAIN, is it only 7 or \(7n\)?

- anonymous

\[7n\]

- anonymous

@mathway

- anonymous

|dw:1442259907363:dw|

- anonymous

idk but this is what i got when i cancelled 3 out \[m=4\]

- mathmate

It is confusing! Let's start over.
Can you post an image of the question?

- anonymous

umm no it on paper

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