Answer:
7 -n = m
Step-by-step explanation:
7 = m+n
Subtract n from each side
7-n = m+n-n
m=7-n
[tex]7 = m+n\\\\Switch\:sides\\\\m+n=7\\\\\mathrm{Subtract\:}n\mathrm{\:from\:both\:sides}\\\\m+n-n=7-n\\\\Simplify\\\\m=7-n[/tex]
