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a fost răspuns

x+y+z=425
[tex] \frac{2x}{3} = \frac{ 4y}{5 } = \frac{ 2z}{3} [/tex]

Răspuns :

10x = 12y =>5x = 6y => y = 5x/6

12y = 10z

6x = 6z => x = z

x + 5x/6 + x = 425

6x + 5x + 6x = 2550

17x = 2550

x = 150  = z

y = (5*150)/6

y = 750/6

y = 125




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