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Simplifying (7.5 + -3Y) + 3Y = 7.5 Remove parenthesis around (7.5 + -3Y) 7.5 + -3Y + 3Y = 7.5 Combine like terms: -3Y + 3Y = 0 7.5 + 0 = 7.5 7.5 = 7.5 Add '-7.5' to each side of the equation. 7.5 + -7.5 = 7.5 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 = 7.5 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 = 0.0 Solving 0.0 = 0.0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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