SymPy Gamma

SymPy:

diophantine (2*x+3*y-5)

$\begin{align}&\mathrm{Solve~the~diophantine~equation~}2 x + 3 y - 5 = 0\\&\mathrm{where~}(x, y)\mathrm{~are~integers}\end{align}$

Result:

diophantine (2*x+3*y-5)

x	y
$3 t_{0} - 5$	$5 - 2 t_{0}$

See what Wolfram|Alpha has to say.

Experiment with SymPy at SymPy Live.