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M+n=100, m-n=30 what is m and what is n
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M+n=100, m-n=30 what is m and what is n
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Mar 1, 2018
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M+n=100, m-n=30 what is m and what is n
Mathematics
high-school
Przemek K
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Przemek K
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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.
Sergiomafra
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Mar 8, 2018
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Sergiomafra
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