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Simplifying -3(x + 5) = -1(3x + 15) Reorder the terms: -3(5 + x) = -1(3x + 15) (5 * -3 + x * -3) = -1(3x + 15) (-15 + -3x) = -1(3x + 15) Reorder the terms: -15 + -3x = -1(15 + 3x) -15 + -3x = (15 * -1 + 3x * -1) -15 + -3x = (-15 + -3x) Add '15' to each side of the equation. -15 + 15 + -3x = -15 + 15 + -3x Combine like terms: -15 + 15 = 0 0 + -3x = -15 + 15 + -3x -3x = -15 + 15 + -3x Combine like terms: -15 + 15 = 0 -3x = 0 + -3x -3x = -3x Add '3x' to each side of the equation. -3x + 3x = -3x + 3x Combine like terms: -3x + 3x = 0 0 = -3x + 3x Combine like terms: -3x + 3x = 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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