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Simplifying 3(3x + 3) + -3(1 + 3x) = 13 Reorder the terms: 3(3 + 3x) + -3(1 + 3x) = 13 (3 * 3 + 3x * 3) + -3(1 + 3x) = 13 (9 + 9x) + -3(1 + 3x) = 13 9 + 9x + (1 * -3 + 3x * -3) = 13 9 + 9x + (-3 + -9x) = 13 Reorder the terms: 9 + -3 + 9x + -9x = 13 Combine like terms: 9 + -3 = 6 6 + 9x + -9x = 13 Combine like terms: 9x + -9x = 0 6 + 0 = 13 6 = 13 Solving 6 = 13 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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