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Simplifying 7 + -3n = n + -4(2 + n) 7 + -3n = n + (2 * -4 + n * -4) 7 + -3n = n + (-8 + -4n) Reorder the terms: 7 + -3n = -8 + n + -4n Combine like terms: n + -4n = -3n 7 + -3n = -8 + -3n Add '3n' to each side of the equation. 7 + -3n + 3n = -8 + -3n + 3n Combine like terms: -3n + 3n = 0 7 + 0 = -8 + -3n + 3n 7 = -8 + -3n + 3n Combine like terms: -3n + 3n = 0 7 = -8 + 0 7 = -8 Solving 7 = -8 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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