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Simplifying 2(x + -7) + 9 = 2x + 4 Reorder the terms: 2(-7 + x) + 9 = 2x + 4 (-7 * 2 + x * 2) + 9 = 2x + 4 (-14 + 2x) + 9 = 2x + 4 Reorder the terms: -14 + 9 + 2x = 2x + 4 Combine like terms: -14 + 9 = -5 -5 + 2x = 2x + 4 Reorder the terms: -5 + 2x = 4 + 2x Add '-2x' to each side of the equation. -5 + 2x + -2x = 4 + 2x + -2x Combine like terms: 2x + -2x = 0 -5 + 0 = 4 + 2x + -2x -5 = 4 + 2x + -2x Combine like terms: 2x + -2x = 0 -5 = 4 + 0 -5 = 4 Solving -5 = 4 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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