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Daca xy-xz=165 si x=5 calculati : y-z=

Răspuns :

[tex]xy-xz=165 \\ x=5 \\ y-z=? \\ xy-xz=165 \\ x(y-z)=165 \\ 5(y-z)=165 \\ y-z=165:5 \\ \boxed{y-z=33}[/tex]