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Simplifying -2(a + 6) = -2a + -12 Reorder the terms: -2(6 + a) = -2a + -12 (6 * -2 + a * -2) = -2a + -12 (-12 + -2a) = -2a + -12 Reorder the terms: -12 + -2a = -12 + -2a Add '12' to each side of the equation. -12 + 12 + -2a = -12 + 12 + -2a Combine like terms: -12 + 12 = 0 0 + -2a = -12 + 12 + -2a -2a = -12 + 12 + -2a Combine like terms: -12 + 12 = 0 -2a = 0 + -2a -2a = -2a Add '2a' to each side of the equation. -2a + 2a = -2a + 2a Combine like terms: -2a + 2a = 0 0 = -2a + 2a Combine like terms: -2a + 2a = 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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