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Simplifying 4n + -7 = n + 3(4 + n) Reorder the terms: -7 + 4n = n + 3(4 + n) -7 + 4n = n + (4 * 3 + n * 3) -7 + 4n = n + (12 + 3n) Reorder the terms: -7 + 4n = 12 + n + 3n Combine like terms: n + 3n = 4n -7 + 4n = 12 + 4n Add '-4n' to each side of the equation. -7 + 4n + -4n = 12 + 4n + -4n Combine like terms: 4n + -4n = 0 -7 + 0 = 12 + 4n + -4n -7 = 12 + 4n + -4n Combine like terms: 4n + -4n = 0 -7 = 12 + 0 -7 = 12 Solving -7 = 12 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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