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Simplifying 40 = 12(7k) Remove parenthesis around (7k) 40 = 12 * 7k Multiply 12 * 7 40 = 84k Solving 40 = 84k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-84k' to each side of the equation. 40 + -84k = 84k + -84k Combine like terms: 84k + -84k = 0 40 + -84k = 0 Add '-40' to each side of the equation. 40 + -40 + -84k = 0 + -40 Combine like terms: 40 + -40 = 0 0 + -84k = 0 + -40 -84k = 0 + -40 Combine like terms: 0 + -40 = -40 -84k = -40 Divide each side by '-84'. k = 0.4761904762 Simplifying k = 0.4761904762
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