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Simplifying -5(4x + -4) + 8 = -20x + 28 Reorder the terms: -5(-4 + 4x) + 8 = -20x + 28 (-4 * -5 + 4x * -5) + 8 = -20x + 28 (20 + -20x) + 8 = -20x + 28 Reorder the terms: 20 + 8 + -20x = -20x + 28 Combine like terms: 20 + 8 = 28 28 + -20x = -20x + 28 Reorder the terms: 28 + -20x = 28 + -20x Add '-28' to each side of the equation. 28 + -28 + -20x = 28 + -28 + -20x Combine like terms: 28 + -28 = 0 0 + -20x = 28 + -28 + -20x -20x = 28 + -28 + -20x Combine like terms: 28 + -28 = 0 -20x = 0 + -20x -20x = -20x Add '20x' to each side of the equation. -20x + 20x = -20x + 20x Combine like terms: -20x + 20x = 0 0 = -20x + 20x Combine like terms: -20x + 20x = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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