fatcats
fatcats
23-03-2017
Mathematics
contestada
m+n=100, m-n=30 what is m and what is n
Respuesta :
morgaine816
morgaine816
23-03-2017
First, you solve for m by adding the equations.
m+n=100
+ m-n=30
--------------
2m=130
m=65
Now plug in 65 for m into one of the original equations
65+n=100
n=35
You can double check by plugging them both in:
65+35=100 and 65-35=30
Hope that helps.
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