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Simplifying -6(2x + -7) = -12x + 42 Reorder the terms: -6(-7 + 2x) = -12x + 42 (-7 * -6 + 2x * -6) = -12x + 42 (42 + -12x) = -12x + 42 Reorder the terms: 42 + -12x = 42 + -12x Add '-42' to each side of the equation. 42 + -42 + -12x = 42 + -42 + -12x Combine like terms: 42 + -42 = 0 0 + -12x = 42 + -42 + -12x -12x = 42 + -42 + -12x Combine like terms: 42 + -42 = 0 -12x = 0 + -12x -12x = -12x Add '12x' to each side of the equation. -12x + 12x = -12x + 12x Combine like terms: -12x + 12x = 0 0 = -12x + 12x Combine like terms: -12x + 12x = 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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