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Simplifying 2y2 + 12y + -1x + 21 = 0 Reorder the terms: 21 + -1x + 12y + 2y2 = 0 Solving 21 + -1x + 12y + 2y2 = 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 + -1x + 12y + -21 + 2y2 = 0 + -21 Reorder the terms: 21 + -21 + -1x + 12y + 2y2 = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -1x + 12y + 2y2 = 0 + -21 -1x + 12y + 2y2 = 0 + -21 Combine like terms: 0 + -21 = -21 -1x + 12y + 2y2 = -21 Add '-12y' to each side of the equation. -1x + 12y + -12y + 2y2 = -21 + -12y Combine like terms: 12y + -12y = 0 -1x + 0 + 2y2 = -21 + -12y -1x + 2y2 = -21 + -12y Add '-2y2' to each side of the equation. -1x + 2y2 + -2y2 = -21 + -12y + -2y2 Combine like terms: 2y2 + -2y2 = 0 -1x + 0 = -21 + -12y + -2y2 -1x = -21 + -12y + -2y2 Divide each side by '-1'. x = 21 + 12y + 2y2 Simplifying x = 21 + 12y + 2y2
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