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Simplifying -120 = -8(7 + -2k) -120 = (7 * -8 + -2k * -8) -120 = (-56 + 16k) Solving -120 = -56 + 16k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-16k' to each side of the equation. -120 + -16k = -56 + 16k + -16k Combine like terms: 16k + -16k = 0 -120 + -16k = -56 + 0 -120 + -16k = -56 Add '120' to each side of the equation. -120 + 120 + -16k = -56 + 120 Combine like terms: -120 + 120 = 0 0 + -16k = -56 + 120 -16k = -56 + 120 Combine like terms: -56 + 120 = 64 -16k = 64 Divide each side by '-16'. k = -4 Simplifying k = -4
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