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Anda1144
a fost răspuns

1. 6[7+3(n+1)]=11 2. 7[7+3(t-7)]=4

Dau coroana!​

Răspuns :

6[7+3n+3]=11
6[10+3n]=11
60+18n=11
18n=11-60
18n=-49 : 18 =>N=-49/18

7[7+3t-21]=4
7[3t-14]=4
21t-98=4
21t=4+98
21t=102:21=>t=102/21

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