4x^2+21y^2=85

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Solution for 4x^2+21y^2=85 equation:


Simplifying
4x2 + 21y2 = 85

Solving
4x2 + 21y2 = 85

Solving for variable 'x'.

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

Add '-21y2' to each side of the equation.
4x2 + 21y2 + -21y2 = 85 + -21y2

Combine like terms: 21y2 + -21y2 = 0
4x2 + 0 = 85 + -21y2
4x2 = 85 + -21y2

Divide each side by '4'.
x2 = 21.25 + -5.25y2

Simplifying
x2 = 21.25 + -5.25y2

Reorder the terms:
-21.25 + x2 + 5.25y2 = 21.25 + -5.25y2 + -21.25 + 5.25y2

Reorder the terms:
-21.25 + x2 + 5.25y2 = 21.25 + -21.25 + -5.25y2 + 5.25y2

Combine like terms: 21.25 + -21.25 = 0.00
-21.25 + x2 + 5.25y2 = 0.00 + -5.25y2 + 5.25y2
-21.25 + x2 + 5.25y2 = -5.25y2 + 5.25y2

Combine like terms: -5.25y2 + 5.25y2 = 0.00
-21.25 + x2 + 5.25y2 = 0.00

The solution to this equation could not be determined.

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