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Simplifying -21 + -5n = -5(n + -6) Reorder the terms: -21 + -5n = -5(-6 + n) -21 + -5n = (-6 * -5 + n * -5) -21 + -5n = (30 + -5n) Add '5n' to each side of the equation. -21 + -5n + 5n = 30 + -5n + 5n Combine like terms: -5n + 5n = 0 -21 + 0 = 30 + -5n + 5n -21 = 30 + -5n + 5n Combine like terms: -5n + 5n = 0 -21 = 30 + 0 -21 = 30 Solving -21 = 30 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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