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Simplifying -2(1 + x) + 9(x + 7) = 8 + 7x (1 * -2 + x * -2) + 9(x + 7) = 8 + 7x (-2 + -2x) + 9(x + 7) = 8 + 7x Reorder the terms: -2 + -2x + 9(7 + x) = 8 + 7x -2 + -2x + (7 * 9 + x * 9) = 8 + 7x -2 + -2x + (63 + 9x) = 8 + 7x Reorder the terms: -2 + 63 + -2x + 9x = 8 + 7x Combine like terms: -2 + 63 = 61 61 + -2x + 9x = 8 + 7x Combine like terms: -2x + 9x = 7x 61 + 7x = 8 + 7x Add '-7x' to each side of the equation. 61 + 7x + -7x = 8 + 7x + -7x Combine like terms: 7x + -7x = 0 61 + 0 = 8 + 7x + -7x 61 = 8 + 7x + -7x Combine like terms: 7x + -7x = 0 61 = 8 + 0 61 = 8 Solving 61 = 8 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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