Răspuns :

Denisa2007755id

{a,b} i.p. {1/5,1/7}

{a,b}d.p.{5/1,7/1}

[tex] \frac{a}{5} = \frac{b}{7} = k[/tex]

[tex]a = 5k[/tex]

[tex]b = 7k[/tex]

[tex]a + b = 36[/tex]

[tex]5k + 7k = 36[/tex]

[tex]12k = 36[/tex]

[tex]k = 36 \div 12[/tex]

[tex]k = 3[/tex]

[tex]a = 5 \times 3[/tex]

[tex]a = 15[/tex]

[tex]b = 5 \times 7[/tex]

[tex]b = 35[/tex]

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