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Simplifying -22(20k + 3) = -231 Reorder the terms: -22(3 + 20k) = -231 (3 * -22 + 20k * -22) = -231 (-66 + -440k) = -231 Solving -66 + -440k = -231 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '66' to each side of the equation. -66 + 66 + -440k = -231 + 66 Combine like terms: -66 + 66 = 0 0 + -440k = -231 + 66 -440k = -231 + 66 Combine like terms: -231 + 66 = -165 -440k = -165 Divide each side by '-440'. k = 0.375 Simplifying k = 0.375
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