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Simplifying 7(k + -4) = 28 Reorder the terms: 7(-4 + k) = 28 (-4 * 7 + k * 7) = 28 (-28 + 7k) = 28 Solving -28 + 7k = 28 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + 7k = 28 + 28 Combine like terms: -28 + 28 = 0 0 + 7k = 28 + 28 7k = 28 + 28 Combine like terms: 28 + 28 = 56 7k = 56 Divide each side by '7'. k = 8 Simplifying k = 8
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