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Simplifying 47y + 21 = 47y + 21 Reorder the terms: 21 + 47y = 47y + 21 Reorder the terms: 21 + 47y = 21 + 47y Add '-21' to each side of the equation. 21 + -21 + 47y = 21 + -21 + 47y Combine like terms: 21 + -21 = 0 0 + 47y = 21 + -21 + 47y 47y = 21 + -21 + 47y Combine like terms: 21 + -21 = 0 47y = 0 + 47y 47y = 47y Add '-47y' to each side of the equation. 47y + -47y = 47y + -47y Combine like terms: 47y + -47y = 0 0 = 47y + -47y Combine like terms: 47y + -47y = 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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