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3x + 3d = 33
x+d = 11 ⇒ x=11-d
x * x+d * x+2d = 1232
x* (11) * (11+d) = 1232
x (11+d) = 112
(11-d) (11+d) = 112
11² - d² = 112
121 - 112 = d²
9 = d²
3 = d la razòn es 3 los números son 8,11,14