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Simplifying 7 = k + (-3) 7 = k + -3 Reorder the terms: 7 = -3 + k Solving 7 = -3 + k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-1k' to each side of the equation. 7 + -1k = -3 + k + -1k Combine like terms: k + -1k = 0 7 + -1k = -3 + 0 7 + -1k = -3 Add '-7' to each side of the equation. 7 + -7 + -1k = -3 + -7 Combine like terms: 7 + -7 = 0 0 + -1k = -3 + -7 -1k = -3 + -7 Combine like terms: -3 + -7 = -10 -1k = -10 Divide each side by '-1'. k = 10 Simplifying k = 10
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