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Simplifying -5n + -25 = -7(3 + n) Reorder the terms: -25 + -5n = -7(3 + n) -25 + -5n = (3 * -7 + n * -7) -25 + -5n = (-21 + -7n) Solving -25 + -5n = -21 + -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. -25 + -5n + 7n = -21 + -7n + 7n Combine like terms: -5n + 7n = 2n -25 + 2n = -21 + -7n + 7n Combine like terms: -7n + 7n = 0 -25 + 2n = -21 + 0 -25 + 2n = -21 Add '25' to each side of the equation. -25 + 25 + 2n = -21 + 25 Combine like terms: -25 + 25 = 0 0 + 2n = -21 + 25 2n = -21 + 25 Combine like terms: -21 + 25 = 4 2n = 4 Divide each side by '2'. n = 2 Simplifying n = 2
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