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Simplifying 9x2 + -81y2 = 81 Solving 9x2 + -81y2 = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '81y2' to each side of the equation. 9x2 + -81y2 + 81y2 = 81 + 81y2 Combine like terms: -81y2 + 81y2 = 0 9x2 + 0 = 81 + 81y2 9x2 = 81 + 81y2 Divide each side by '9'. x2 = 9 + 9y2 Simplifying x2 = 9 + 9y2 Reorder the terms: -9 + x2 + -9y2 = 9 + 9y2 + -9 + -9y2 Reorder the terms: -9 + x2 + -9y2 = 9 + -9 + 9y2 + -9y2 Combine like terms: 9 + -9 = 0 -9 + x2 + -9y2 = 0 + 9y2 + -9y2 -9 + x2 + -9y2 = 9y2 + -9y2 Combine like terms: 9y2 + -9y2 = 0 -9 + x2 + -9y2 = 0 The solution to this equation could not be determined.
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