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Simplifying 3x2 + 3y2 + -21 = 0 Reorder the terms: -21 + 3x2 + 3y2 = 0 Solving -21 + 3x2 + 3y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 3x2 + 21 + 3y2 = 0 + 21 Reorder the terms: -21 + 21 + 3x2 + 3y2 = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 3x2 + 3y2 = 0 + 21 3x2 + 3y2 = 0 + 21 Combine like terms: 0 + 21 = 21 3x2 + 3y2 = 21 Add '-3y2' to each side of the equation. 3x2 + 3y2 + -3y2 = 21 + -3y2 Combine like terms: 3y2 + -3y2 = 0 3x2 + 0 = 21 + -3y2 3x2 = 21 + -3y2 Divide each side by '3'. x2 = 7 + -1y2 Simplifying x2 = 7 + -1y2 Reorder the terms: -7 + x2 + y2 = 7 + -1y2 + -7 + y2 Reorder the terms: -7 + x2 + y2 = 7 + -7 + -1y2 + y2 Combine like terms: 7 + -7 = 0 -7 + x2 + y2 = 0 + -1y2 + y2 -7 + x2 + y2 = -1y2 + y2 Combine like terms: -1y2 + y2 = 0 -7 + x2 + y2 = 0 The solution to this equation could not be determined.
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