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Simplifying 3x2 + 3y2 = 81 Solving 3x2 + 3y2 = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3y2' to each side of the equation. 3x2 + 3y2 + -3y2 = 81 + -3y2 Combine like terms: 3y2 + -3y2 = 0 3x2 + 0 = 81 + -3y2 3x2 = 81 + -3y2 Divide each side by '3'. x2 = 27 + -1y2 Simplifying x2 = 27 + -1y2 Reorder the terms: -27 + x2 + y2 = 27 + -1y2 + -27 + y2 Reorder the terms: -27 + x2 + y2 = 27 + -27 + -1y2 + y2 Combine like terms: 27 + -27 = 0 -27 + x2 + y2 = 0 + -1y2 + y2 -27 + x2 + y2 = -1y2 + y2 Combine like terms: -1y2 + y2 = 0 -27 + x2 + y2 = 0 The solution to this equation could not be determined.
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