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Simplifying (7.5 + -1y) + 0 = 7.5 + -1y Remove parenthesis around (7.5 + -1y) 7.5 + -1y + 0 = 7.5 + -1y Reorder the terms: 7.5 + 0 + -1y = 7.5 + -1y Combine like terms: 7.5 + 0 = 7.5 7.5 + -1y = 7.5 + -1y Add '-7.5' to each side of the equation. 7.5 + -7.5 + -1y = 7.5 + -7.5 + -1y Combine like terms: 7.5 + -7.5 = 0.0 0.0 + -1y = 7.5 + -7.5 + -1y -1y = 7.5 + -7.5 + -1y Combine like terms: 7.5 + -7.5 = 0.0 -1y = 0.0 + -1y -1y = -1y Add 'y' to each side of the equation. -1y + y = -1y + y Combine like terms: -1y + y = 0 0 = -1y + y Combine like terms: -1y + y = 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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