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Simplifying 5x + 15x + -2 = 4(5x + 7) Reorder the terms: -2 + 5x + 15x = 4(5x + 7) Combine like terms: 5x + 15x = 20x -2 + 20x = 4(5x + 7) Reorder the terms: -2 + 20x = 4(7 + 5x) -2 + 20x = (7 * 4 + 5x * 4) -2 + 20x = (28 + 20x) Add '-20x' to each side of the equation. -2 + 20x + -20x = 28 + 20x + -20x Combine like terms: 20x + -20x = 0 -2 + 0 = 28 + 20x + -20x -2 = 28 + 20x + -20x Combine like terms: 20x + -20x = 0 -2 = 28 + 0 -2 = 28 Solving -2 = 28 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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