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Simplifying 15 = 6k + 7k Combine like terms: 6k + 7k = 13k 15 = 13k Solving 15 = 13k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-13k' to each side of the equation. 15 + -13k = 13k + -13k Combine like terms: 13k + -13k = 0 15 + -13k = 0 Add '-15' to each side of the equation. 15 + -15 + -13k = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -13k = 0 + -15 -13k = 0 + -15 Combine like terms: 0 + -15 = -15 -13k = -15 Divide each side by '-13'. k = 1.153846154 Simplifying k = 1.153846154
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