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Simplifying 4(2x + -3) = 7x + x + -20 Reorder the terms: 4(-3 + 2x) = 7x + x + -20 (-3 * 4 + 2x * 4) = 7x + x + -20 (-12 + 8x) = 7x + x + -20 Reorder the terms: -12 + 8x = -20 + 7x + x Combine like terms: 7x + x = 8x -12 + 8x = -20 + 8x Add '-8x' to each side of the equation. -12 + 8x + -8x = -20 + 8x + -8x Combine like terms: 8x + -8x = 0 -12 + 0 = -20 + 8x + -8x -12 = -20 + 8x + -8x Combine like terms: 8x + -8x = 0 -12 = -20 + 0 -12 = -20 Solving -12 = -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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