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Simplifying -2(-1c + -20) = 2c + -20 Reorder the terms: -2(-20 + -1c) = 2c + -20 (-20 * -2 + -1c * -2) = 2c + -20 (40 + 2c) = 2c + -20 Reorder the terms: 40 + 2c = -20 + 2c Add '-2c' to each side of the equation. 40 + 2c + -2c = -20 + 2c + -2c Combine like terms: 2c + -2c = 0 40 + 0 = -20 + 2c + -2c 40 = -20 + 2c + -2c Combine like terms: 2c + -2c = 0 40 = -20 + 0 40 = -20 Solving 40 = -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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