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Simplifying 4(n + -3) = 21 Reorder the terms: 4(-3 + n) = 21 (-3 * 4 + n * 4) = 21 (-12 + 4n) = 21 Solving -12 + 4n = 21 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + 4n = 21 + 12 Combine like terms: -12 + 12 = 0 0 + 4n = 21 + 12 4n = 21 + 12 Combine like terms: 21 + 12 = 33 4n = 33 Divide each side by '4'. n = 8.25 Simplifying n = 8.25
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