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Stiind ca a × b +a × c = 135 , a =9 , aflati b+ c

Răspuns :

Miky93
[tex]ab+ac=135 \\\\ a(b+c)=135 \\\\ 9* (b+c)=135 \ |:9 \\\\ \boxed{b+c=15}[/tex]
ab+ac=135
a(b+c)=135
9(b+c)=135
b+c=135:9
b+c=15

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