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Simplifying 10x + 30x + -7 = 8(5x + 9) Reorder the terms: -7 + 10x + 30x = 8(5x + 9) Combine like terms: 10x + 30x = 40x -7 + 40x = 8(5x + 9) Reorder the terms: -7 + 40x = 8(9 + 5x) -7 + 40x = (9 * 8 + 5x * 8) -7 + 40x = (72 + 40x) Add '-40x' to each side of the equation. -7 + 40x + -40x = 72 + 40x + -40x Combine like terms: 40x + -40x = 0 -7 + 0 = 72 + 40x + -40x -7 = 72 + 40x + -40x Combine like terms: 40x + -40x = 0 -7 = 72 + 0 -7 = 72 Solving -7 = 72 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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