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Simplifying -9w + 15 = -3(3w + -5) Reorder the terms: 15 + -9w = -3(3w + -5) Reorder the terms: 15 + -9w = -3(-5 + 3w) 15 + -9w = (-5 * -3 + 3w * -3) 15 + -9w = (15 + -9w) Add '-15' to each side of the equation. 15 + -15 + -9w = 15 + -15 + -9w Combine like terms: 15 + -15 = 0 0 + -9w = 15 + -15 + -9w -9w = 15 + -15 + -9w Combine like terms: 15 + -15 = 0 -9w = 0 + -9w -9w = -9w Add '9w' to each side of the equation. -9w + 9w = -9w + 9w Combine like terms: -9w + 9w = 0 0 = -9w + 9w Combine like terms: -9w + 9w = 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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