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Simplifying 15(3n + 4) = 5(9n + 12) Reorder the terms: 15(4 + 3n) = 5(9n + 12) (4 * 15 + 3n * 15) = 5(9n + 12) (60 + 45n) = 5(9n + 12) Reorder the terms: 60 + 45n = 5(12 + 9n) 60 + 45n = (12 * 5 + 9n * 5) 60 + 45n = (60 + 45n) Add '-60' to each side of the equation. 60 + -60 + 45n = 60 + -60 + 45n Combine like terms: 60 + -60 = 0 0 + 45n = 60 + -60 + 45n 45n = 60 + -60 + 45n Combine like terms: 60 + -60 = 0 45n = 0 + 45n 45n = 45n Add '-45n' to each side of the equation. 45n + -45n = 45n + -45n Combine like terms: 45n + -45n = 0 0 = 45n + -45n Combine like terms: 45n + -45n = 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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