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Simplifying 9x + -4(x + 7) = 9 + 5(x + 3) Reorder the terms: 9x + -4(7 + x) = 9 + 5(x + 3) 9x + (7 * -4 + x * -4) = 9 + 5(x + 3) 9x + (-28 + -4x) = 9 + 5(x + 3) Reorder the terms: -28 + 9x + -4x = 9 + 5(x + 3) Combine like terms: 9x + -4x = 5x -28 + 5x = 9 + 5(x + 3) Reorder the terms: -28 + 5x = 9 + 5(3 + x) -28 + 5x = 9 + (3 * 5 + x * 5) -28 + 5x = 9 + (15 + 5x) Combine like terms: 9 + 15 = 24 -28 + 5x = 24 + 5x Add '-5x' to each side of the equation. -28 + 5x + -5x = 24 + 5x + -5x Combine like terms: 5x + -5x = 0 -28 + 0 = 24 + 5x + -5x -28 = 24 + 5x + -5x Combine like terms: 5x + -5x = 0 -28 = 24 + 0 -28 = 24 Solving -28 = 24 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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