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Simplifying -7m + -20 = 2m + 12 + -9m Reorder the terms: -20 + -7m = 2m + 12 + -9m Reorder the terms: -20 + -7m = 12 + 2m + -9m Combine like terms: 2m + -9m = -7m -20 + -7m = 12 + -7m Add '7m' to each side of the equation. -20 + -7m + 7m = 12 + -7m + 7m Combine like terms: -7m + 7m = 0 -20 + 0 = 12 + -7m + 7m -20 = 12 + -7m + 7m Combine like terms: -7m + 7m = 0 -20 = 12 + 0 -20 = 12 Solving -20 = 12 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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