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Simplifying 18m + -20 + 3m = 3(7m + 2) Reorder the terms: -20 + 18m + 3m = 3(7m + 2) Combine like terms: 18m + 3m = 21m -20 + 21m = 3(7m + 2) Reorder the terms: -20 + 21m = 3(2 + 7m) -20 + 21m = (2 * 3 + 7m * 3) -20 + 21m = (6 + 21m) Add '-21m' to each side of the equation. -20 + 21m + -21m = 6 + 21m + -21m Combine like terms: 21m + -21m = 0 -20 + 0 = 6 + 21m + -21m -20 = 6 + 21m + -21m Combine like terms: 21m + -21m = 0 -20 = 6 + 0 -20 = 6 Solving -20 = 6 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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