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