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Simplifying 7x + 13x + -2 = 4(5x + 9) Reorder the terms: -2 + 7x + 13x = 4(5x + 9) Combine like terms: 7x + 13x = 20x -2 + 20x = 4(5x + 9) Reorder the terms: -2 + 20x = 4(9 + 5x) -2 + 20x = (9 * 4 + 5x * 4) -2 + 20x = (36 + 20x) Add '-20x' to each side of the equation. -2 + 20x + -20x = 36 + 20x + -20x Combine like terms: 20x + -20x = 0 -2 + 0 = 36 + 20x + -20x -2 = 36 + 20x + -20x Combine like terms: 20x + -20x = 0 -2 = 36 + 0 -2 = 36 Solving -2 = 36 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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