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Simplifying (2x + 7) + -1(2x + -4) = 0 Reorder the terms: (7 + 2x) + -1(2x + -4) = 0 Remove parenthesis around (7 + 2x) 7 + 2x + -1(2x + -4) = 0 Reorder the terms: 7 + 2x + -1(-4 + 2x) = 0 7 + 2x + (-4 * -1 + 2x * -1) = 0 7 + 2x + (4 + -2x) = 0 Reorder the terms: 7 + 4 + 2x + -2x = 0 Combine like terms: 7 + 4 = 11 11 + 2x + -2x = 0 Combine like terms: 2x + -2x = 0 11 + 0 = 0 11 = 0 Solving 11 = 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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