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Simplifying 4(u + 3) + -8u = -20 Reorder the terms: 4(3 + u) + -8u = -20 (3 * 4 + u * 4) + -8u = -20 (12 + 4u) + -8u = -20 Combine like terms: 4u + -8u = -4u 12 + -4u = -20 Solving 12 + -4u = -20 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + -4u = -20 + -12 Combine like terms: 12 + -12 = 0 0 + -4u = -20 + -12 -4u = -20 + -12 Combine like terms: -20 + -12 = -32 -4u = -32 Divide each side by '-4'. u = 8 Simplifying u = 8
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