195
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21.6667 x 3 =65
These: 1, 3, 5, 13, 15, 39, 65, 195 (1 x 195, 3 x 65, 5 x 39, 13 x 15).
1 and 64. 5 x 13 = 65
This is a nice little problem. (16 + x) / (3 + x) = 5/8 5 (3 + x) = 8 (16 + x) 15 + 5x = 128 + 8x -3x = 113 x =- 113 / 3 =============================== Check: 16 - 113/3 = (48 - 113)/3 = -65/3 3 - 113/3 = (9 - 113)/3 = -104/3 (-65/3) / (-104/3) = 65/104 = (13x5)/(13/8) = 5/8 yay!
1 x 65, 5 x 13, 13 x 5, 65 x 1 = 65