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Simplifying 5(3x + -9) = 15(x + -9) Reorder the terms: 5(-9 + 3x) = 15(x + -9) (-9 * 5 + 3x * 5) = 15(x + -9) (-45 + 15x) = 15(x + -9) Reorder the terms: -45 + 15x = 15(-9 + x) -45 + 15x = (-9 * 15 + x * 15) -45 + 15x = (-135 + 15x) Add '-15x' to each side of the equation. -45 + 15x + -15x = -135 + 15x + -15x Combine like terms: 15x + -15x = 0 -45 + 0 = -135 + 15x + -15x -45 = -135 + 15x + -15x Combine like terms: 15x + -15x = 0 -45 = -135 + 0 -45 = -135 Solving -45 = -135 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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