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Simplifying -140 = 7 + 7(n + 2) Reorder the terms: -140 = 7 + 7(2 + n) -140 = 7 + (2 * 7 + n * 7) -140 = 7 + (14 + 7n) Combine like terms: 7 + 14 = 21 -140 = 21 + 7n Solving -140 = 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. -140 + -7n = 21 + 7n + -7n Combine like terms: 7n + -7n = 0 -140 + -7n = 21 + 0 -140 + -7n = 21 Add '140' to each side of the equation. -140 + 140 + -7n = 21 + 140 Combine like terms: -140 + 140 = 0 0 + -7n = 21 + 140 -7n = 21 + 140 Combine like terms: 21 + 140 = 161 -7n = 161 Divide each side by '-7'. n = -23 Simplifying n = -23
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