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Simplifying 4x + -9(5 + x) = -5(x + 7) 4x + (5 * -9 + x * -9) = -5(x + 7) 4x + (-45 + -9x) = -5(x + 7) Reorder the terms: -45 + 4x + -9x = -5(x + 7) Combine like terms: 4x + -9x = -5x -45 + -5x = -5(x + 7) Reorder the terms: -45 + -5x = -5(7 + x) -45 + -5x = (7 * -5 + x * -5) -45 + -5x = (-35 + -5x) Add '5x' to each side of the equation. -45 + -5x + 5x = -35 + -5x + 5x Combine like terms: -5x + 5x = 0 -45 + 0 = -35 + -5x + 5x -45 = -35 + -5x + 5x Combine like terms: -5x + 5x = 0 -45 = -35 + 0 -45 = -35 Solving -45 = -35 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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