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Simplifying 13(t + -6) + 8t = 7(3t + 2) + -9 Reorder the terms: 13(-6 + t) + 8t = 7(3t + 2) + -9 (-6 * 13 + t * 13) + 8t = 7(3t + 2) + -9 (-78 + 13t) + 8t = 7(3t + 2) + -9 Combine like terms: 13t + 8t = 21t -78 + 21t = 7(3t + 2) + -9 Reorder the terms: -78 + 21t = 7(2 + 3t) + -9 -78 + 21t = (2 * 7 + 3t * 7) + -9 -78 + 21t = (14 + 21t) + -9 Reorder the terms: -78 + 21t = 14 + -9 + 21t Combine like terms: 14 + -9 = 5 -78 + 21t = 5 + 21t Add '-21t' to each side of the equation. -78 + 21t + -21t = 5 + 21t + -21t Combine like terms: 21t + -21t = 0 -78 + 0 = 5 + 21t + -21t -78 = 5 + 21t + -21t Combine like terms: 21t + -21t = 0 -78 = 5 + 0 -78 = 5 Solving -78 = 5 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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