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Simplifying k + -3 = 4k + -15 Reorder the terms: -3 + k = 4k + -15 Reorder the terms: -3 + k = -15 + 4k Solving -3 + k = -15 + 4k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-4k' to each side of the equation. -3 + k + -4k = -15 + 4k + -4k Combine like terms: k + -4k = -3k -3 + -3k = -15 + 4k + -4k Combine like terms: 4k + -4k = 0 -3 + -3k = -15 + 0 -3 + -3k = -15 Add '3' to each side of the equation. -3 + 3 + -3k = -15 + 3 Combine like terms: -3 + 3 = 0 0 + -3k = -15 + 3 -3k = -15 + 3 Combine like terms: -15 + 3 = -12 -3k = -12 Divide each side by '-3'. k = 4 Simplifying k = 4
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