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Simplifying 7x + -1(3x + -2) = -4(5 + -1x) Reorder the terms: 7x + -1(-2 + 3x) = -4(5 + -1x) 7x + (-2 * -1 + 3x * -1) = -4(5 + -1x) 7x + (2 + -3x) = -4(5 + -1x) Reorder the terms: 2 + 7x + -3x = -4(5 + -1x) Combine like terms: 7x + -3x = 4x 2 + 4x = -4(5 + -1x) 2 + 4x = (5 * -4 + -1x * -4) 2 + 4x = (-20 + 4x) Add '-4x' to each side of the equation. 2 + 4x + -4x = -20 + 4x + -4x Combine like terms: 4x + -4x = 0 2 + 0 = -20 + 4x + -4x 2 = -20 + 4x + -4x Combine like terms: 4x + -4x = 0 2 = -20 + 0 2 = -20 Solving 2 = -20 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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