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