SOLUTION: I'm trying to figure out the answer for 3m+4=19-2n I tried 3m+4-4=19-2n-4 3m=15-2n ? I get confused on these, thanks for your help

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Question 257811: I'm trying to figure out the answer for 3m+4=19-2n

I tried 3m+4-4=19-2n-4
3m=15-2n
?


I get confused on these, thanks for your help
Found 2 solutions by richwmiller, drk:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
You want the answer. i want to know the question.
What do you want to know about this equation?
Don't say you want the answer!
The answer depends on the question.
You can't solve for both m and n.

Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
Here is the original question
(i) 3m%2B4=19-2n
I notice you have two variables here. ALso M is next to the n on the keyboard, so it could be one variable. We have four options. Hopefully one of these will answer your question.
--
option 1 - solve (i) for m
3m%2B4=19-2n
subtract 4 from both sides to get
3m+=+19+-+4+-2n
divide by 3 to get
m+=+%28-2%2F3%29n+%2B+5
--
option 2 - solve (i) for n
3m%2B4=19-2n
subtract 19 from both sides to get
3m+%2B+4+-+19+=+-2n
divide by -2 to get
n+=+%28-3%2F2%29n+-+15%2F2
--
option 3 - m=n solve (i) for m
3m%2B4=19-2m
subtract 4 from both sides to get
3m+=+19+-+4+-2m
add 2m to both sides to get
5m+=+15
divide by 5 to get
m+=+3
--
option 4 - m=n solve (i) for n
3n%2B4=19-2n
subtract 4 from both sides to get
3n+=+19+-+4+-2n
add 2n to both sides to get
5n+=+15
divide by 5 to get
n+=+3