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Simplifying 7k + 3 = 4k + 15 Reorder the terms: 3 + 7k = 4k + 15 Reorder the terms: 3 + 7k = 15 + 4k Solving 3 + 7k = 15 + 4k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4k' to each side of the equation. 3 + 7k + -4k = 15 + 4k + -4k Combine like terms: 7k + -4k = 3k 3 + 3k = 15 + 4k + -4k Combine like terms: 4k + -4k = 0 3 + 3k = 15 + 0 3 + 3k = 15 Add '-3' to each side of the equation. 3 + -3 + 3k = 15 + -3 Combine like terms: 3 + -3 = 0 0 + 3k = 15 + -3 3k = 15 + -3 Combine like terms: 15 + -3 = 12 3k = 12 Divide each side by '3'. k = 4 Simplifying k = 4
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