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Simplifying 7(x + -1) + 9 = 4x + 3(1 + x) Reorder the terms: 7(-1 + x) + 9 = 4x + 3(1 + x) (-1 * 7 + x * 7) + 9 = 4x + 3(1 + x) (-7 + 7x) + 9 = 4x + 3(1 + x) Reorder the terms: -7 + 9 + 7x = 4x + 3(1 + x) Combine like terms: -7 + 9 = 2 2 + 7x = 4x + 3(1 + x) 2 + 7x = 4x + (1 * 3 + x * 3) 2 + 7x = 4x + (3 + 3x) Reorder the terms: 2 + 7x = 3 + 4x + 3x Combine like terms: 4x + 3x = 7x 2 + 7x = 3 + 7x Add '-7x' to each side of the equation. 2 + 7x + -7x = 3 + 7x + -7x Combine like terms: 7x + -7x = 0 2 + 0 = 3 + 7x + -7x 2 = 3 + 7x + -7x Combine like terms: 7x + -7x = 0 2 = 3 + 0 2 = 3 Solving 2 = 3 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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