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Simplifying 7 + 2(w + 1) = 2w + 9 Reorder the terms: 7 + 2(1 + w) = 2w + 9 7 + (1 * 2 + w * 2) = 2w + 9 7 + (2 + 2w) = 2w + 9 Combine like terms: 7 + 2 = 9 9 + 2w = 2w + 9 Reorder the terms: 9 + 2w = 9 + 2w Add '-9' to each side of the equation. 9 + -9 + 2w = 9 + -9 + 2w Combine like terms: 9 + -9 = 0 0 + 2w = 9 + -9 + 2w 2w = 9 + -9 + 2w Combine like terms: 9 + -9 = 0 2w = 0 + 2w 2w = 2w Add '-2w' to each side of the equation. 2w + -2w = 2w + -2w Combine like terms: 2w + -2w = 0 0 = 2w + -2w Combine like terms: 2w + -2w = 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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