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Simplifying 21 + 2n = 6n + -3 Reorder the terms: 21 + 2n = -3 + 6n Solving 21 + 2n = -3 + 6n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-6n' to each side of the equation. 21 + 2n + -6n = -3 + 6n + -6n Combine like terms: 2n + -6n = -4n 21 + -4n = -3 + 6n + -6n Combine like terms: 6n + -6n = 0 21 + -4n = -3 + 0 21 + -4n = -3 Add '-21' to each side of the equation. 21 + -21 + -4n = -3 + -21 Combine like terms: 21 + -21 = 0 0 + -4n = -3 + -21 -4n = -3 + -21 Combine like terms: -3 + -21 = -24 -4n = -24 Divide each side by '-4'. n = 6 Simplifying n = 6
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