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a fost răspuns

Determinati
3x+9y+11
stiind ca
x=3y=10

Răspuns :

Renatemambouko
x=3y=10
3x+9y+11=3(x+3y)+11=3(10+10)+11=3*20+11=71
Andreeapba
3x+9y+11=3(x+3y)+11=3(10+10)+11=3*20+11=60+11=71
x=3y=10