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Simplifying 20(20) + 2n = 600 Multiply 20 * 20 400 + 2n = 600 Solving 400 + 2n = 600 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-400' to each side of the equation. 400 + -400 + 2n = 600 + -400 Combine like terms: 400 + -400 = 0 0 + 2n = 600 + -400 2n = 600 + -400 Combine like terms: 600 + -400 = 200 2n = 200 Divide each side by '2'. n = 100 Simplifying n = 100
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