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Simplifying 4k + 1(-4 + -2k) = 2(k + -2) 4k + (-4 * 1 + -2k * 1) = 2(k + -2) 4k + (-4 + -2k) = 2(k + -2) Reorder the terms: -4 + 4k + -2k = 2(k + -2) Combine like terms: 4k + -2k = 2k -4 + 2k = 2(k + -2) Reorder the terms: -4 + 2k = 2(-2 + k) -4 + 2k = (-2 * 2 + k * 2) -4 + 2k = (-4 + 2k) Add '4' to each side of the equation. -4 + 4 + 2k = -4 + 4 + 2k Combine like terms: -4 + 4 = 0 0 + 2k = -4 + 4 + 2k 2k = -4 + 4 + 2k Combine like terms: -4 + 4 = 0 2k = 0 + 2k 2k = 2k Add '-2k' to each side of the equation. 2k + -2k = 2k + -2k Combine like terms: 2k + -2k = 0 0 = 2k + -2k Combine like terms: 2k + -2k = 0 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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