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Simplifying 21x2 + 26x + 8 = 21x2 Reorder the terms: 8 + 26x + 21x2 = 21x2 Add '-21x2' to each side of the equation. 8 + 26x + 21x2 + -21x2 = 21x2 + -21x2 Combine like terms: 21x2 + -21x2 = 0 8 + 26x + 0 = 21x2 + -21x2 8 + 26x = 21x2 + -21x2 Combine like terms: 21x2 + -21x2 = 0 8 + 26x = 0 Solving 8 + 26x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + 26x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + 26x = 0 + -8 26x = 0 + -8 Combine like terms: 0 + -8 = -8 26x = -8 Divide each side by '26'. x = -0.3076923077 Simplifying x = -0.3076923077
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