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Simplifying 840 = 7k Solving 840 = 7k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-7k' to each side of the equation. 840 + -7k = 7k + -7k Combine like terms: 7k + -7k = 0 840 + -7k = 0 Add '-840' to each side of the equation. 840 + -840 + -7k = 0 + -840 Combine like terms: 840 + -840 = 0 0 + -7k = 0 + -840 -7k = 0 + -840 Combine like terms: 0 + -840 = -840 -7k = -840 Divide each side by '-7'. k = 120 Simplifying k = 120
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