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Simplifying -4(m + 7) = -20 + -4m Reorder the terms: -4(7 + m) = -20 + -4m (7 * -4 + m * -4) = -20 + -4m (-28 + -4m) = -20 + -4m Add '4m' to each side of the equation. -28 + -4m + 4m = -20 + -4m + 4m Combine like terms: -4m + 4m = 0 -28 + 0 = -20 + -4m + 4m -28 = -20 + -4m + 4m Combine like terms: -4m + 4m = 0 -28 = -20 + 0 -28 = -20 Solving -28 = -20 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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