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Simplifying -13(x + 1) = -13x + -13 Reorder the terms: -13(1 + x) = -13x + -13 (1 * -13 + x * -13) = -13x + -13 (-13 + -13x) = -13x + -13 Reorder the terms: -13 + -13x = -13 + -13x Add '13' to each side of the equation. -13 + 13 + -13x = -13 + 13 + -13x Combine like terms: -13 + 13 = 0 0 + -13x = -13 + 13 + -13x -13x = -13 + 13 + -13x Combine like terms: -13 + 13 = 0 -13x = 0 + -13x -13x = -13x Add '13x' to each side of the equation. -13x + 13x = -13x + 13x Combine like terms: -13x + 13x = 0 0 = -13x + 13x Combine like terms: -13x + 13x = 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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