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Simplifying (9y2 + -18x2) + -1(18y2 + -9x2) = 0 Reorder the terms: (-18x2 + 9y2) + -1(18y2 + -9x2) = 0 Remove parenthesis around (-18x2 + 9y2) -18x2 + 9y2 + -1(18y2 + -9x2) = 0 Reorder the terms: -18x2 + 9y2 + -1(-9x2 + 18y2) = 0 -18x2 + 9y2 + (-9x2 * -1 + 18y2 * -1) = 0 -18x2 + 9y2 + (9x2 + -18y2) = 0 Reorder the terms: -18x2 + 9x2 + 9y2 + -18y2 = 0 Combine like terms: -18x2 + 9x2 = -9x2 -9x2 + 9y2 + -18y2 = 0 Combine like terms: 9y2 + -18y2 = -9y2 -9x2 + -9y2 = 0 Solving -9x2 + -9y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9y2' to each side of the equation. -9x2 + -9y2 + 9y2 = 0 + 9y2 Combine like terms: -9y2 + 9y2 = 0 -9x2 + 0 = 0 + 9y2 -9x2 = 0 + 9y2 Remove the zero: -9x2 = 9y2 Divide each side by '-9'. x2 = -1y2 Simplifying x2 = -1y2 Combine like terms: -1y2 + y2 = 0 x2 + y2 = 0 The solution to this equation could not be determined.
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