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Simplifying 9k2 + 66 + 21 = 0 Reorder the terms: 66 + 21 + 9k2 = 0 Combine like terms: 66 + 21 = 87 87 + 9k2 = 0 Solving 87 + 9k2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-87' to each side of the equation. 87 + -87 + 9k2 = 0 + -87 Combine like terms: 87 + -87 = 0 0 + 9k2 = 0 + -87 9k2 = 0 + -87 Combine like terms: 0 + -87 = -87 9k2 = -87 Divide each side by '9'. k2 = -9.666666667 Simplifying k2 = -9.666666667 Reorder the terms: 9.666666667 + k2 = -9.666666667 + 9.666666667 Combine like terms: -9.666666667 + 9.666666667 = 0.000000000 9.666666667 + k2 = 0.000000000 The solution to this equation could not be determined.
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