x^2+y^2+z^2-6z-7=0

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Solution for x^2+y^2+z^2-6z-7=0 equation:


Simplifying
x2 + y2 + z2 + -6z + -7 = 0

Reorder the terms:
-7 + x2 + y2 + -6z + z2 = 0

Solving
-7 + x2 + y2 + -6z + z2 = 0

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + x2 + y2 + -6z + 7 + z2 = 0 + 7

Reorder the terms:
-7 + 7 + x2 + y2 + -6z + z2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + x2 + y2 + -6z + z2 = 0 + 7
x2 + y2 + -6z + z2 = 0 + 7

Combine like terms: 0 + 7 = 7
x2 + y2 + -6z + z2 = 7

Add '-1y2' to each side of the equation.
x2 + y2 + -6z + -1y2 + z2 = 7 + -1y2

Reorder the terms:
x2 + y2 + -1y2 + -6z + z2 = 7 + -1y2

Combine like terms: y2 + -1y2 = 0
x2 + 0 + -6z + z2 = 7 + -1y2
x2 + -6z + z2 = 7 + -1y2

Add '6z' to each side of the equation.
x2 + -6z + 6z + z2 = 7 + -1y2 + 6z

Combine like terms: -6z + 6z = 0
x2 + 0 + z2 = 7 + -1y2 + 6z
x2 + z2 = 7 + -1y2 + 6z

Add '-1z2' to each side of the equation.
x2 + z2 + -1z2 = 7 + -1y2 + 6z + -1z2

Combine like terms: z2 + -1z2 = 0
x2 + 0 = 7 + -1y2 + 6z + -1z2
x2 = 7 + -1y2 + 6z + -1z2

Simplifying
x2 = 7 + -1y2 + 6z + -1z2

Reorder the terms:
-7 + x2 + y2 + -6z + z2 = 7 + -1y2 + 6z + -1z2 + -7 + y2 + -6z + z2

Reorder the terms:
-7 + x2 + y2 + -6z + z2 = 7 + -7 + -1y2 + y2 + 6z + -6z + -1z2 + z2

Combine like terms: 7 + -7 = 0
-7 + x2 + y2 + -6z + z2 = 0 + -1y2 + y2 + 6z + -6z + -1z2 + z2
-7 + x2 + y2 + -6z + z2 = -1y2 + y2 + 6z + -6z + -1z2 + z2

Combine like terms: -1y2 + y2 = 0
-7 + x2 + y2 + -6z + z2 = 0 + 6z + -6z + -1z2 + z2
-7 + x2 + y2 + -6z + z2 = 6z + -6z + -1z2 + z2

Combine like terms: 6z + -6z = 0
-7 + x2 + y2 + -6z + z2 = 0 + -1z2 + z2
-7 + x2 + y2 + -6z + z2 = -1z2 + z2

Combine like terms: -1z2 + z2 = 0
-7 + x2 + y2 + -6z + z2 = 0

The solution to this equation could not be determined.

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