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Simplifying 2(-1x + -2) + (5x + -1) = 3(x + -7) + 18 Reorder the terms: 2(-2 + -1x) + (5x + -1) = 3(x + -7) + 18 (-2 * 2 + -1x * 2) + (5x + -1) = 3(x + -7) + 18 (-4 + -2x) + (5x + -1) = 3(x + -7) + 18 Reorder the terms: -4 + -2x + (-1 + 5x) = 3(x + -7) + 18 Remove parenthesis around (-1 + 5x) -4 + -2x + -1 + 5x = 3(x + -7) + 18 Reorder the terms: -4 + -1 + -2x + 5x = 3(x + -7) + 18 Combine like terms: -4 + -1 = -5 -5 + -2x + 5x = 3(x + -7) + 18 Combine like terms: -2x + 5x = 3x -5 + 3x = 3(x + -7) + 18 Reorder the terms: -5 + 3x = 3(-7 + x) + 18 -5 + 3x = (-7 * 3 + x * 3) + 18 -5 + 3x = (-21 + 3x) + 18 Reorder the terms: -5 + 3x = -21 + 18 + 3x Combine like terms: -21 + 18 = -3 -5 + 3x = -3 + 3x Add '-3x' to each side of the equation. -5 + 3x + -3x = -3 + 3x + -3x Combine like terms: 3x + -3x = 0 -5 + 0 = -3 + 3x + -3x -5 = -3 + 3x + -3x Combine like terms: 3x + -3x = 0 -5 = -3 + 0 -5 = -3 Solving -5 = -3 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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