If the answers for (x,y,z) is not asked, you can easily check by substituting values to the three equations. Then you can see the given ordered triple satisfy only the first equation. So the given ordered triple is not the solution.
Anyhow, your answers does not seems to be correct. Because it does not satisfy the above three equations when substituted and you cannot get two answers since there should only be one point which satisfies this system of equations.
correct answer is (-69/4,-7/2,26)