Non-negative integer solution for $ax + by = c$
53560
Find largest $k$ such that the diophantine equation $ax+by=k$ does not have nonnegative solution.
112575
Finding integer solutions of $m^2-n^5 = m - n$
24837
$x^2+1=0$ uncountable many solutions
13120
Find all integer solutions to $x^2+y^2+z^2=2xyz$
89031
Solve $a!b!=a!+b!+c!$ where $a$, $b$ and $c$ are nonnegative integers.
35874
Show that when $BA = I$, the solution of $Ax=b$ is unique
44296
Solving a cubic polynomial equation.
73079
Eliminating non-integer solutions to $ab / (2\sqrt{ab} + a + b)$
135087
Find integer solutions of $xy=-1$ (using only elementary ring theory).
110408
Solving for $A$ in $Ax = b$
50772
Solving a Linear Diophantine Equation
132931
Determining the parity of the coefficients of a quadratic given that there is a rational solution
151764
modular arithmetic, solving $ax + b \equiv c \pmod d$?
155559
Quickest way to determine a polynomial with positive integer coefficients
76716
Solve an equation in $\mathbb{R}^+$
15753
Solve the following equation in positive integers $x$ and $y$
115850
Minimum of $|ax-by+c|$