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