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Simplifying 7(3m + 1) = 9 + 21m Reorder the terms: 7(1 + 3m) = 9 + 21m (1 * 7 + 3m * 7) = 9 + 21m (7 + 21m) = 9 + 21m Add '-21m' to each side of the equation. 7 + 21m + -21m = 9 + 21m + -21m Combine like terms: 21m + -21m = 0 7 + 0 = 9 + 21m + -21m 7 = 9 + 21m + -21m Combine like terms: 21m + -21m = 0 7 = 9 + 0 7 = 9 Solving 7 = 9 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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