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Simplifying 2w + 21 = 5w + -3w + 21 Reorder the terms: 21 + 2w = 5w + -3w + 21 Reorder the terms: 21 + 2w = 21 + 5w + -3w Combine like terms: 5w + -3w = 2w 21 + 2w = 21 + 2w Add '-21' to each side of the equation. 21 + -21 + 2w = 21 + -21 + 2w Combine like terms: 21 + -21 = 0 0 + 2w = 21 + -21 + 2w 2w = 21 + -21 + 2w Combine like terms: 21 + -21 = 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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