x^2-7y=21

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Solution for x^2-7y=21 equation:


Simplifying
x2 + -7y = 21

Solving
x2 + -7y = 21

Solving for variable 'x'.

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

Add '7y' to each side of the equation.
x2 + -7y + 7y = 21 + 7y

Combine like terms: -7y + 7y = 0
x2 + 0 = 21 + 7y
x2 = 21 + 7y

Simplifying
x2 = 21 + 7y

Reorder the terms:
-21 + x2 + -7y = 21 + 7y + -21 + -7y

Reorder the terms:
-21 + x2 + -7y = 21 + -21 + 7y + -7y

Combine like terms: 21 + -21 = 0
-21 + x2 + -7y = 0 + 7y + -7y
-21 + x2 + -7y = 7y + -7y

Combine like terms: 7y + -7y = 0
-21 + x2 + -7y = 0

The solution to this equation could not be determined.

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