3x^2+6y=21

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Solution for 3x^2+6y=21 equation:


Simplifying
3x2 + 6y = 21

Solving
3x2 + 6y = 21

Solving for variable 'x'.

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

Add '-6y' to each side of the equation.
3x2 + 6y + -6y = 21 + -6y

Combine like terms: 6y + -6y = 0
3x2 + 0 = 21 + -6y
3x2 = 21 + -6y

Divide each side by '3'.
x2 = 7 + -2y

Simplifying
x2 = 7 + -2y

Reorder the terms:
-7 + x2 + 2y = 7 + -2y + -7 + 2y

Reorder the terms:
-7 + x2 + 2y = 7 + -7 + -2y + 2y

Combine like terms: 7 + -7 = 0
-7 + x2 + 2y = 0 + -2y + 2y
-7 + x2 + 2y = -2y + 2y

Combine like terms: -2y + 2y = 0
-7 + x2 + 2y = 0

The solution to this equation could not be determined.

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