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Simplifying (x2 + -4x + 7) + (y2 + 6y + 9) = 16 Reorder the terms: (7 + -4x + x2) + (y2 + 6y + 9) = 16 Remove parenthesis around (7 + -4x + x2) 7 + -4x + x2 + (y2 + 6y + 9) = 16 Reorder the terms: 7 + -4x + x2 + (9 + 6y + y2) = 16 Remove parenthesis around (9 + 6y + y2) 7 + -4x + x2 + 9 + 6y + y2 = 16 Reorder the terms: 7 + 9 + -4x + x2 + 6y + y2 = 16 Combine like terms: 7 + 9 = 16 16 + -4x + x2 + 6y + y2 = 16 Add '-16' to each side of the equation. 16 + -4x + x2 + 6y + -16 + y2 = 16 + -16 Reorder the terms: 16 + -16 + -4x + x2 + 6y + y2 = 16 + -16 Combine like terms: 16 + -16 = 0 0 + -4x + x2 + 6y + y2 = 16 + -16 -4x + x2 + 6y + y2 = 16 + -16 Combine like terms: 16 + -16 = 0 -4x + x2 + 6y + y2 = 0 Solving -4x + x2 + 6y + y2 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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