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Simplifying 1600 = -1x3 + 4x2 + 400n Reorder the terms: 1600 = 400n + 4x2 + -1x3 Solving 1600 = 400n + 4x2 + -1x3 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-400n' to each side of the equation. 1600 + -400n = 400n + 4x2 + -400n + -1x3 Reorder the terms: 1600 + -400n = 400n + -400n + 4x2 + -1x3 Combine like terms: 400n + -400n = 0 1600 + -400n = 0 + 4x2 + -1x3 1600 + -400n = 4x2 + -1x3 Add '-1600' to each side of the equation. 1600 + -1600 + -400n = 4x2 + -1600 + -1x3 Combine like terms: 1600 + -1600 = 0 0 + -400n = 4x2 + -1600 + -1x3 -400n = 4x2 + -1600 + -1x3 Reorder the terms: -400n = -1600 + 4x2 + -1x3 Divide each side by '-400'. n = 4 + -0.01x2 + 0.0025x3 Simplifying n = 4 + -0.01x2 + 0.0025x3
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