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Simplifying 5x + 8 + -7x = -1(2x + -4) Reorder the terms: 8 + 5x + -7x = -1(2x + -4) Combine like terms: 5x + -7x = -2x 8 + -2x = -1(2x + -4) Reorder the terms: 8 + -2x = -1(-4 + 2x) 8 + -2x = (-4 * -1 + 2x * -1) 8 + -2x = (4 + -2x) Add '2x' to each side of the equation. 8 + -2x + 2x = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 8 + 0 = 4 + -2x + 2x 8 = 4 + -2x + 2x Combine like terms: -2x + 2x = 0 8 = 4 + 0 8 = 4 Solving 8 = 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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