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Răspuns:
Explicație pas cu pas:
x/y = 10/5 = 2 =>
x = 2y
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a) (⁵⁾x+x/5)/(y+x) = (6x/5)/(x+y) = (12y/5)/3y =
12y/15y = 12/15 = 4/5
b) 5x/(2x+y) + y/x = 10y/(4y+y) + y/2y =
= ²⁾2 + 1/2 = 5/2