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Simplifying 7x + -12 + -2x = -5(-1x + 8) Reorder the terms: -12 + 7x + -2x = -5(-1x + 8) Combine like terms: 7x + -2x = 5x -12 + 5x = -5(-1x + 8) Reorder the terms: -12 + 5x = -5(8 + -1x) -12 + 5x = (8 * -5 + -1x * -5) -12 + 5x = (-40 + 5x) Add '-5x' to each side of the equation. -12 + 5x + -5x = -40 + 5x + -5x Combine like terms: 5x + -5x = 0 -12 + 0 = -40 + 5x + -5x -12 = -40 + 5x + -5x Combine like terms: 5x + -5x = 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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