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Simplifying -3(-8u + 3) + -4u = 2(u + -8) + -7 Reorder the terms: -3(3 + -8u) + -4u = 2(u + -8) + -7 (3 * -3 + -8u * -3) + -4u = 2(u + -8) + -7 (-9 + 24u) + -4u = 2(u + -8) + -7 Combine like terms: 24u + -4u = 20u -9 + 20u = 2(u + -8) + -7 Reorder the terms: -9 + 20u = 2(-8 + u) + -7 -9 + 20u = (-8 * 2 + u * 2) + -7 -9 + 20u = (-16 + 2u) + -7 Reorder the terms: -9 + 20u = -16 + -7 + 2u Combine like terms: -16 + -7 = -23 -9 + 20u = -23 + 2u Solving -9 + 20u = -23 + 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. -9 + 20u + -2u = -23 + 2u + -2u Combine like terms: 20u + -2u = 18u -9 + 18u = -23 + 2u + -2u Combine like terms: 2u + -2u = 0 -9 + 18u = -23 + 0 -9 + 18u = -23 Add '9' to each side of the equation. -9 + 9 + 18u = -23 + 9 Combine like terms: -9 + 9 = 0 0 + 18u = -23 + 9 18u = -23 + 9 Combine like terms: -23 + 9 = -14 18u = -14 Divide each side by '18'. u = -0.7777777778 Simplifying u = -0.7777777778
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