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