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Simplifying 3x + -1(x + -7) = 2 + 2x + -8 Reorder the terms: 3x + -1(-7 + x) = 2 + 2x + -8 3x + (-7 * -1 + x * -1) = 2 + 2x + -8 3x + (7 + -1x) = 2 + 2x + -8 Reorder the terms: 7 + 3x + -1x = 2 + 2x + -8 Combine like terms: 3x + -1x = 2x 7 + 2x = 2 + 2x + -8 Reorder the terms: 7 + 2x = 2 + -8 + 2x Combine like terms: 2 + -8 = -6 7 + 2x = -6 + 2x Add '-2x' to each side of the equation. 7 + 2x + -2x = -6 + 2x + -2x Combine like terms: 2x + -2x = 0 7 + 0 = -6 + 2x + -2x 7 = -6 + 2x + -2x Combine like terms: 2x + -2x = 0 7 = -6 + 0 7 = -6 Solving 7 = -6 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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