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