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Simplifying 5n + 30 = 7n Reorder the terms: 30 + 5n = 7n Solving 30 + 5n = 7n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7n' to each side of the equation. 30 + 5n + -7n = 7n + -7n Combine like terms: 5n + -7n = -2n 30 + -2n = 7n + -7n Combine like terms: 7n + -7n = 0 30 + -2n = 0 Add '-30' to each side of the equation. 30 + -30 + -2n = 0 + -30 Combine like terms: 30 + -30 = 0 0 + -2n = 0 + -30 -2n = 0 + -30 Combine like terms: 0 + -30 = -30 -2n = -30 Divide each side by '-2'. n = 15 Simplifying n = 15
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