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a + b + c = 15 si 2/3
a + b + c = 47/3
b = 2a
c = b + 2/3
c = 2a + 2/3
³⁾a + ³⁾2a + ³⁾2a + 2/3 = 47/3
3a + 6a + 6a = 47 - 2
15a = 45
a = 45 : 15
a = 3
b = 2 * 3
b = 6
³⁾c = ³⁾2 * 3 + 2/3
3c =18 + 2
c = 20/3