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Simplifying 7x + 13x + -7 = 4(5x + 2) Reorder the terms: -7 + 7x + 13x = 4(5x + 2) Combine like terms: 7x + 13x = 20x -7 + 20x = 4(5x + 2) Reorder the terms: -7 + 20x = 4(2 + 5x) -7 + 20x = (2 * 4 + 5x * 4) -7 + 20x = (8 + 20x) Add '-20x' to each side of the equation. -7 + 20x + -20x = 8 + 20x + -20x Combine like terms: 20x + -20x = 0 -7 + 0 = 8 + 20x + -20x -7 = 8 + 20x + -20x Combine like terms: 20x + -20x = 0 -7 = 8 + 0 -7 = 8 Solving -7 = 8 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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