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