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If 3m+4n=47, and m+n=15, what is m?

 May 17, 2021

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 #2
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If 3m+4n=47, and m+n=15, what is m?

 

Hello Guest!

 

\(3m+4n=47\\ m+n=15\ |\ -m\\ n=15-m\ |\ n\ einsetzen\\ 3m+4(15-m)=47\\ 3m+60-4m=47\\ -m+60=47\ |\ -60 \)

\(-m=47-60\\ -m=-13\ |\ \times (-1)\)

\(m=13\)

laugh  !

 May 17, 2021
 #1
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I think 43/3

 May 17, 2021
 #2
avatar+11629 
+2
Best Answer

If 3m+4n=47, and m+n=15, what is m?

 

Hello Guest!

 

\(3m+4n=47\\ m+n=15\ |\ -m\\ n=15-m\ |\ n\ einsetzen\\ 3m+4(15-m)=47\\ 3m+60-4m=47\\ -m+60=47\ |\ -60 \)

\(-m=47-60\\ -m=-13\ |\ \times (-1)\)

\(m=13\)

laugh  !

asinus May 17, 2021

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