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Simplifying 30y + 45 = 7.5(4y + 6) Reorder the terms: 45 + 30y = 7.5(4y + 6) Reorder the terms: 45 + 30y = 7.5(6 + 4y) 45 + 30y = (6 * 7.5 + 4y * 7.5) 45 + 30y = (45 + 30y) Add '-45' to each side of the equation. 45 + -45 + 30y = 45 + -45 + 30y Combine like terms: 45 + -45 = 0 0 + 30y = 45 + -45 + 30y 30y = 45 + -45 + 30y Combine like terms: 45 + -45 = 0 30y = 0 + 30y 30y = 30y Add '-30y' to each side of the equation. 30y + -30y = 30y + -30y Combine like terms: 30y + -30y = 0 0 = 30y + -30y Combine like terms: 30y + -30y = 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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