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Simplifying 7x + 13x + -4 = 5(4x + 8) Reorder the terms: -4 + 7x + 13x = 5(4x + 8) Combine like terms: 7x + 13x = 20x -4 + 20x = 5(4x + 8) Reorder the terms: -4 + 20x = 5(8 + 4x) -4 + 20x = (8 * 5 + 4x * 5) -4 + 20x = (40 + 20x) Add '-20x' to each side of the equation. -4 + 20x + -20x = 40 + 20x + -20x Combine like terms: 20x + -20x = 0 -4 + 0 = 40 + 20x + -20x -4 = 40 + 20x + -20x Combine like terms: 20x + -20x = 0 -4 = 40 + 0 -4 = 40 Solving -4 = 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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