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Simplifying 3(7n) = 2n + -4 Remove parenthesis around (7n) 3 * 7n = 2n + -4 Multiply 3 * 7 21n = 2n + -4 Reorder the terms: 21n = -4 + 2n Solving 21n = -4 + 2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2n' to each side of the equation. 21n + -2n = -4 + 2n + -2n Combine like terms: 21n + -2n = 19n 19n = -4 + 2n + -2n Combine like terms: 2n + -2n = 0 19n = -4 + 0 19n = -4 Divide each side by '19'. n = -0.2105263158 Simplifying n = -0.2105263158
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