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Simplifying 20 + (3 * 5) = 7n Multiply 3 * 5 20 + (15) = 7n 20 + 15 = 7n Combine like terms: 20 + 15 = 35 35 = 7n Solving 35 = 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. 35 + -7n = 7n + -7n Combine like terms: 7n + -7n = 0 35 + -7n = 0 Add '-35' to each side of the equation. 35 + -35 + -7n = 0 + -35 Combine like terms: 35 + -35 = 0 0 + -7n = 0 + -35 -7n = 0 + -35 Combine like terms: 0 + -35 = -35 -7n = -35 Divide each side by '-7'. n = 5 Simplifying n = 5
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