How to solve these $3$ equations for three unknowns $x$,$y$,$z$?
135742
Solve system of simultaneous equations in $3$ variables: $x+y+xy=19$, $y+z+yz=11$, $z+x+zx=14$
144863
Finding integer solutions to $y^2=x^3-2$
18903
Finding solutions to equation of the form $1+x+x^{2} + \cdots + x^{m} = y^{n}$
153377
How to solve $y^2=3x^4+3x^2+1$ for integers.
154829
How to solve $y'' + y = y^{-3}$
145287
Solve for integers $x, y, z$ such that $x + y = 1 - z$ and $x^3 + y^3 = 1 - z^2$.
29876
Find the number of triples $(x,y,z)$ of real numbers satisfying the equation $x^4+y^4+z^4+1=4xyz$
131223
How to solve the equation $yy''-y'y^2-(y')^2$?
116205
System of equations in a,b,c,d
121113
How to solve this nonlinear 2 by 2 equations?
83496
Math contest integer triplet problem: $x + y + z + xy + yz + xz = xyz − 1$
61134
Solving cubic equations with another method.
94965
Solve $x\equiv 1\pmod2$, $x\equiv 2\pmod3$, $x\equiv 3\pmod4$, $x\equiv 4\pmod5$, $x\equiv 5\pmod6$ and $x\equiv 0\pmod7$
73538
solving $\cos z + \sin z = i$
13120
Find all integer solutions to $x^2+y^2+z^2=2xyz$
89677
Why there isn't any integer solutions in non-zero integers for $z^3 = 3(x^3 +y^3+2xyz)$?
48860
Why won't Mathematica Solve a set of two equations for one variable?