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Simplifying -28 = 7(n + -3) Reorder the terms: -28 = 7(-3 + n) -28 = (-3 * 7 + n * 7) -28 = (-21 + 7n) Solving -28 = -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. -28 + -7n = -21 + 7n + -7n Combine like terms: 7n + -7n = 0 -28 + -7n = -21 + 0 -28 + -7n = -21 Add '28' to each side of the equation. -28 + 28 + -7n = -21 + 28 Combine like terms: -28 + 28 = 0 0 + -7n = -21 + 28 -7n = -21 + 28 Combine like terms: -21 + 28 = 7 -7n = 7 Divide each side by '-7'. n = -1 Simplifying n = -1
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