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Simplifying 8u + 4 + -2(-4u + -2) = 2(u + -2) Reorder the terms: 8u + 4 + -2(-2 + -4u) = 2(u + -2) 8u + 4 + (-2 * -2 + -4u * -2) = 2(u + -2) 8u + 4 + (4 + 8u) = 2(u + -2) Reorder the terms: 4 + 4 + 8u + 8u = 2(u + -2) Combine like terms: 4 + 4 = 8 8 + 8u + 8u = 2(u + -2) Combine like terms: 8u + 8u = 16u 8 + 16u = 2(u + -2) Reorder the terms: 8 + 16u = 2(-2 + u) 8 + 16u = (-2 * 2 + u * 2) 8 + 16u = (-4 + 2u) Solving 8 + 16u = -4 + 2u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-2u' to each side of the equation. 8 + 16u + -2u = -4 + 2u + -2u Combine like terms: 16u + -2u = 14u 8 + 14u = -4 + 2u + -2u Combine like terms: 2u + -2u = 0 8 + 14u = -4 + 0 8 + 14u = -4 Add '-8' to each side of the equation. 8 + -8 + 14u = -4 + -8 Combine like terms: 8 + -8 = 0 0 + 14u = -4 + -8 14u = -4 + -8 Combine like terms: -4 + -8 = -12 14u = -12 Divide each side by '14'. u = -0.8571428571 Simplifying u = -0.8571428571
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