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Simplifying 2(x + -1) + -7x = 18 + -5(x + -4) Reorder the terms: 2(-1 + x) + -7x = 18 + -5(x + -4) (-1 * 2 + x * 2) + -7x = 18 + -5(x + -4) (-2 + 2x) + -7x = 18 + -5(x + -4) Combine like terms: 2x + -7x = -5x -2 + -5x = 18 + -5(x + -4) Reorder the terms: -2 + -5x = 18 + -5(-4 + x) -2 + -5x = 18 + (-4 * -5 + x * -5) -2 + -5x = 18 + (20 + -5x) Combine like terms: 18 + 20 = 38 -2 + -5x = 38 + -5x Add '5x' to each side of the equation. -2 + -5x + 5x = 38 + -5x + 5x Combine like terms: -5x + 5x = 0 -2 + 0 = 38 + -5x + 5x -2 = 38 + -5x + 5x Combine like terms: -5x + 5x = 0 -2 = 38 + 0 -2 = 38 Solving -2 = 38 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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