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Simplifying (9x2 + 7y2 + -3) + -1(7x2 + 7y2 + -7) = 0 Reorder the terms: (-3 + 9x2 + 7y2) + -1(7x2 + 7y2 + -7) = 0 Remove parenthesis around (-3 + 9x2 + 7y2) -3 + 9x2 + 7y2 + -1(7x2 + 7y2 + -7) = 0 Reorder the terms: -3 + 9x2 + 7y2 + -1(-7 + 7x2 + 7y2) = 0 -3 + 9x2 + 7y2 + (-7 * -1 + 7x2 * -1 + 7y2 * -1) = 0 -3 + 9x2 + 7y2 + (7 + -7x2 + -7y2) = 0 Reorder the terms: -3 + 7 + 9x2 + -7x2 + 7y2 + -7y2 = 0 Combine like terms: -3 + 7 = 4 4 + 9x2 + -7x2 + 7y2 + -7y2 = 0 Combine like terms: 9x2 + -7x2 = 2x2 4 + 2x2 + 7y2 + -7y2 = 0 Combine like terms: 7y2 + -7y2 = 0 4 + 2x2 + 0 = 0 4 + 2x2 = 0 Solving 4 + 2x2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 2x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 2x2 = 0 + -4 2x2 = 0 + -4 Combine like terms: 0 + -4 = -4 2x2 = -4 Divide each side by '2'. x2 = -2 Simplifying x2 = -2 Reorder the terms: 2 + x2 = -2 + 2 Combine like terms: -2 + 2 = 0 2 + x2 = 0 The solution to this equation could not be determined.
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