edjiejwi
24.11.2020 •
Mathematics
HELP MY PARENTS ARGUING ABOUT THIS ASSIGNMENT PLEASE DO THIS HURRY!!!
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Ответ:
Ответ:
n=3
Step-by-step explanation:
3n+18=39-4n
-18 -18
3n=21-4n
+4n +4n
7n=21
7/7n=21/7
n=3