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Simplifying 7n + -21 = 49 Reorder the terms: -21 + 7n = 49 Solving -21 + 7n = 49 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '21' to each side of the equation. -21 + 21 + 7n = 49 + 21 Combine like terms: -21 + 21 = 0 0 + 7n = 49 + 21 7n = 49 + 21 Combine like terms: 49 + 21 = 70 7n = 70 Divide each side by '7'. n = 10 Simplifying n = 10
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