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Simplifying -3(7x + 2) + 3 = 81 Reorder the terms: -3(2 + 7x) + 3 = 81 (2 * -3 + 7x * -3) + 3 = 81 (-6 + -21x) + 3 = 81 Reorder the terms: -6 + 3 + -21x = 81 Combine like terms: -6 + 3 = -3 -3 + -21x = 81 Solving -3 + -21x = 81 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -21x = 81 + 3 Combine like terms: -3 + 3 = 0 0 + -21x = 81 + 3 -21x = 81 + 3 Combine like terms: 81 + 3 = 84 -21x = 84 Divide each side by '-21'. x = -4 Simplifying x = -4
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