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Simplifying -3(x + 7) + 9 = 2x + -5(x + 8) Reorder the terms: -3(7 + x) + 9 = 2x + -5(x + 8) (7 * -3 + x * -3) + 9 = 2x + -5(x + 8) (-21 + -3x) + 9 = 2x + -5(x + 8) Reorder the terms: -21 + 9 + -3x = 2x + -5(x + 8) Combine like terms: -21 + 9 = -12 -12 + -3x = 2x + -5(x + 8) Reorder the terms: -12 + -3x = 2x + -5(8 + x) -12 + -3x = 2x + (8 * -5 + x * -5) -12 + -3x = 2x + (-40 + -5x) Reorder the terms: -12 + -3x = -40 + 2x + -5x Combine like terms: 2x + -5x = -3x -12 + -3x = -40 + -3x Add '3x' to each side of the equation. -12 + -3x + 3x = -40 + -3x + 3x Combine like terms: -3x + 3x = 0 -12 + 0 = -40 + -3x + 3x -12 = -40 + -3x + 3x Combine like terms: -3x + 3x = 0 -12 = -40 + 0 -12 = -40 Solving -12 = -40 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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