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Simplifying 3(2x + -1) + -1(2 + -1x) + -7x = 0 Reorder the terms: 3(-1 + 2x) + -1(2 + -1x) + -7x = 0 (-1 * 3 + 2x * 3) + -1(2 + -1x) + -7x = 0 (-3 + 6x) + -1(2 + -1x) + -7x = 0 -3 + 6x + (2 * -1 + -1x * -1) + -7x = 0 -3 + 6x + (-2 + 1x) + -7x = 0 Reorder the terms: -3 + -2 + 6x + 1x + -7x = 0 Combine like terms: -3 + -2 = -5 -5 + 6x + 1x + -7x = 0 Combine like terms: 6x + 1x = 7x -5 + 7x + -7x = 0 Combine like terms: 7x + -7x = 0 -5 + 0 = 0 -5 = 0 Solving -5 = 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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