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Simplifying 7 + -1(6 + -1x) = -2x + 3(x + 4) 7 + (6 * -1 + -1x * -1) = -2x + 3(x + 4) 7 + (-6 + 1x) = -2x + 3(x + 4) Combine like terms: 7 + -6 = 1 1 + 1x = -2x + 3(x + 4) Reorder the terms: 1 + 1x = -2x + 3(4 + x) 1 + 1x = -2x + (4 * 3 + x * 3) 1 + 1x = -2x + (12 + 3x) Reorder the terms: 1 + 1x = 12 + -2x + 3x Combine like terms: -2x + 3x = 1x 1 + 1x = 12 + 1x Add '-1x' to each side of the equation. 1 + 1x + -1x = 12 + 1x + -1x Combine like terms: 1x + -1x = 0 1 + 0 = 12 + 1x + -1x 1 = 12 + 1x + -1x Combine like terms: 1x + -1x = 0 1 = 12 + 0 1 = 12 Solving 1 = 12 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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