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Simplifying 1x + 2(3 + x) = 3x + 7 1x + (3 * 2 + x * 2) = 3x + 7 1x + (6 + 2x) = 3x + 7 Reorder the terms: 6 + 1x + 2x = 3x + 7 Combine like terms: 1x + 2x = 3x 6 + 3x = 3x + 7 Reorder the terms: 6 + 3x = 7 + 3x Add '-3x' to each side of the equation. 6 + 3x + -3x = 7 + 3x + -3x Combine like terms: 3x + -3x = 0 6 + 0 = 7 + 3x + -3x 6 = 7 + 3x + -3x Combine like terms: 3x + -3x = 0 6 = 7 + 0 6 = 7 Solving 6 = 7 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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