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