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Daca a+b=5 supra 3 si a-b= 1 supra 3, Determinati numerele

Răspuns :

Danamocanu71
a+b=5/3;
a=b+1/3;
⇒b+1/3+b=5/3
⇒2b=4/3
⇒b=4/3·1/2
⇒b=4/6⇒b=2/3;
⇒a=2/3+1/3
⇒a=3/3⇒a=1;
Mpaul2000
[tex]a+b= \frac{5}{3} \\ a-b= \frac{1}{3}=\ \textgreater \ a= \frac{1}{3}+b \\ inlocuim: \\ a+b= \frac{5}{3} \\ b+ \frac{1}{3}+b= \frac{5}{3} \\ 2b= \frac{5-1}{3}= \frac{4}{3} \\ b= \frac{4}{3}:2= \frac{2}{3} \\ a= \frac{1+2}{3}=1 [/tex]

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