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Simplifying 3x + 4y + -6y2 + 90 = 0 Reorder the terms: 90 + 3x + 4y + -6y2 = 0 Solving 90 + 3x + 4y + -6y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-90' to each side of the equation. 90 + 3x + 4y + -90 + -6y2 = 0 + -90 Reorder the terms: 90 + -90 + 3x + 4y + -6y2 = 0 + -90 Combine like terms: 90 + -90 = 0 0 + 3x + 4y + -6y2 = 0 + -90 3x + 4y + -6y2 = 0 + -90 Combine like terms: 0 + -90 = -90 3x + 4y + -6y2 = -90 Add '-4y' to each side of the equation. 3x + 4y + -4y + -6y2 = -90 + -4y Combine like terms: 4y + -4y = 0 3x + 0 + -6y2 = -90 + -4y 3x + -6y2 = -90 + -4y Add '6y2' to each side of the equation. 3x + -6y2 + 6y2 = -90 + -4y + 6y2 Combine like terms: -6y2 + 6y2 = 0 3x + 0 = -90 + -4y + 6y2 3x = -90 + -4y + 6y2 Divide each side by '3'. x = -30 + -1.333333333y + 2y2 Simplifying x = -30 + -1.333333333y + 2y2
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