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Simplifying 7 = -4n + -1(-9) Multiply -1 * -9 7 = -4n + 9 Reorder the terms: 7 = 9 + -4n Solving 7 = 9 + -4n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4n' to each side of the equation. 7 + 4n = 9 + -4n + 4n Combine like terms: -4n + 4n = 0 7 + 4n = 9 + 0 7 + 4n = 9 Add '-7' to each side of the equation. 7 + -7 + 4n = 9 + -7 Combine like terms: 7 + -7 = 0 0 + 4n = 9 + -7 4n = 9 + -7 Combine like terms: 9 + -7 = 2 4n = 2 Divide each side by '4'. n = 0.5 Simplifying n = 0.5
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