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Simplifying 9(x + 1) + 7 = 6x + 3(5 + x) Reorder the terms: 9(1 + x) + 7 = 6x + 3(5 + x) (1 * 9 + x * 9) + 7 = 6x + 3(5 + x) (9 + 9x) + 7 = 6x + 3(5 + x) Reorder the terms: 9 + 7 + 9x = 6x + 3(5 + x) Combine like terms: 9 + 7 = 16 16 + 9x = 6x + 3(5 + x) 16 + 9x = 6x + (5 * 3 + x * 3) 16 + 9x = 6x + (15 + 3x) Reorder the terms: 16 + 9x = 15 + 6x + 3x Combine like terms: 6x + 3x = 9x 16 + 9x = 15 + 9x Add '-9x' to each side of the equation. 16 + 9x + -9x = 15 + 9x + -9x Combine like terms: 9x + -9x = 0 16 + 0 = 15 + 9x + -9x 16 = 15 + 9x + -9x Combine like terms: 9x + -9x = 0 16 = 15 + 0 16 = 15 Solving 16 = 15 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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