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Simplifying 30 + -6n = -12 + 9n Solving 30 + -6n = -12 + 9n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9n' to each side of the equation. 30 + -6n + -9n = -12 + 9n + -9n Combine like terms: -6n + -9n = -15n 30 + -15n = -12 + 9n + -9n Combine like terms: 9n + -9n = 0 30 + -15n = -12 + 0 30 + -15n = -12 Add '-30' to each side of the equation. 30 + -30 + -15n = -12 + -30 Combine like terms: 30 + -30 = 0 0 + -15n = -12 + -30 -15n = -12 + -30 Combine like terms: -12 + -30 = -42 -15n = -42 Divide each side by '-15'. n = 2.8 Simplifying n = 2.8
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