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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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