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Simplifying n + -7.5 = 21.4 Reorder the terms: -7.5 + n = 21.4 Solving -7.5 + n = 21.4 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7.5' to each side of the equation. -7.5 + 7.5 + n = 21.4 + 7.5 Combine like terms: -7.5 + 7.5 = 0.0 0.0 + n = 21.4 + 7.5 n = 21.4 + 7.5 Combine like terms: 21.4 + 7.5 = 28.9 n = 28.9 Simplifying n = 28.9
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