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Simplifying 5[9 + (3 + -1) * 4] + -20 * 2 = 0 Combine like terms: 3 + -1 = 2 5[9 + (2) * 4] + -20 * 2 = 0 Multiply 2 * 4 5[9 + 8] + -20 * 2 = 0 Combine like terms: 9 + 8 = 17 5[17] + -20 * 2 = 0 Multiply 5 * 17 85 + -20 * 2 = 0 Multiply -20 * 2 85 + -40 = 0 Combine like terms: 85 + -40 = 45 45 = 0 Solving 45 = 0 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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