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Simplifying 2x2 + -5n + 7 = 0 Reorder the terms: 7 + -5n + 2x2 = 0 Solving 7 + -5n + 2x2 = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -5n + -7 + 2x2 = 0 + -7 Reorder the terms: 7 + -7 + -5n + 2x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5n + 2x2 = 0 + -7 -5n + 2x2 = 0 + -7 Combine like terms: 0 + -7 = -7 -5n + 2x2 = -7 Add '-2x2' to each side of the equation. -5n + 2x2 + -2x2 = -7 + -2x2 Combine like terms: 2x2 + -2x2 = 0 -5n + 0 = -7 + -2x2 -5n = -7 + -2x2 Divide each side by '-5'. n = 1.4 + 0.4x2 Simplifying n = 1.4 + 0.4x2
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