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Simplifying -13 + -1n = -7(1 + n) -13 + -1n = (1 * -7 + n * -7) -13 + -1n = (-7 + -7n) Solving -13 + -1n = -7 + -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. -13 + -1n + 7n = -7 + -7n + 7n Combine like terms: -1n + 7n = 6n -13 + 6n = -7 + -7n + 7n Combine like terms: -7n + 7n = 0 -13 + 6n = -7 + 0 -13 + 6n = -7 Add '13' to each side of the equation. -13 + 13 + 6n = -7 + 13 Combine like terms: -13 + 13 = 0 0 + 6n = -7 + 13 6n = -7 + 13 Combine like terms: -7 + 13 = 6 6n = 6 Divide each side by '6'. n = 1 Simplifying n = 1
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