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Simplifying 3 = 7(k + -1) Reorder the terms: 3 = 7(-1 + k) 3 = (-1 * 7 + k * 7) 3 = (-7 + 7k) Solving 3 = -7 + 7k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-7k' to each side of the equation. 3 + -7k = -7 + 7k + -7k Combine like terms: 7k + -7k = 0 3 + -7k = -7 + 0 3 + -7k = -7 Add '-3' to each side of the equation. 3 + -3 + -7k = -7 + -3 Combine like terms: 3 + -3 = 0 0 + -7k = -7 + -3 -7k = -7 + -3 Combine like terms: -7 + -3 = -10 -7k = -10 Divide each side by '-7'. k = 1.428571429 Simplifying k = 1.428571429
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