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