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Simplifying 5x2 + -7k + -66 = 0 Reorder the terms: -66 + -7k + 5x2 = 0 Solving -66 + -7k + 5x2 = 0 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '66' to each side of the equation. -66 + -7k + 66 + 5x2 = 0 + 66 Reorder the terms: -66 + 66 + -7k + 5x2 = 0 + 66 Combine like terms: -66 + 66 = 0 0 + -7k + 5x2 = 0 + 66 -7k + 5x2 = 0 + 66 Combine like terms: 0 + 66 = 66 -7k + 5x2 = 66 Add '-5x2' to each side of the equation. -7k + 5x2 + -5x2 = 66 + -5x2 Combine like terms: 5x2 + -5x2 = 0 -7k + 0 = 66 + -5x2 -7k = 66 + -5x2 Divide each side by '-7'. k = -9.428571429 + 0.7142857143x2 Simplifying k = -9.428571429 + 0.7142857143x2
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