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Simplifying 7(5k) = 210 Remove parenthesis around (5k) 7 * 5k = 210 Multiply 7 * 5 35k = 210 Solving 35k = 210 Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Divide each side by '35'. k = 6 Simplifying k = 6
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