`Solve[{w == x + e - Sqrt[(a/m)*(x - y - e)],y == z + f - Sqrt[(z + f)*(x - w + e)], x == w - e + Sqrt[(a/(m - h))*(z - w - e)],z == y - f + Sqrt[(a/s)*(y - f)]} {w, x, y, z}] . `

Here `w`

, `x`

, `y`

and `z`

are variables while others like `a`

, `m`

, `e`

and `f`

are constants.