Odpowiedź:
1/f = 1/x + 1/y
y=?
1/f - 1/x = 1/y
x-f/fx = 1/y
fx/x-f = y
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Odpowiedź:
1/f = 1/x + 1/y
y=?
1/f - 1/x = 1/y
x-f/fx = 1/y
fx/x-f = y