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Simplifying 9x + 19x + -9 = 7(4x + 6) Reorder the terms: -9 + 9x + 19x = 7(4x + 6) Combine like terms: 9x + 19x = 28x -9 + 28x = 7(4x + 6) Reorder the terms: -9 + 28x = 7(6 + 4x) -9 + 28x = (6 * 7 + 4x * 7) -9 + 28x = (42 + 28x) Add '-28x' to each side of the equation. -9 + 28x + -28x = 42 + 28x + -28x Combine like terms: 28x + -28x = 0 -9 + 0 = 42 + 28x + -28x -9 = 42 + 28x + -28x Combine like terms: 28x + -28x = 0 -9 = 42 + 0 -9 = 42 Solving -9 = 42 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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