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Simplifying 28 + u = 8u Solving 28 + u = 8u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-8u' to each side of the equation. 28 + u + -8u = 8u + -8u Combine like terms: u + -8u = -7u 28 + -7u = 8u + -8u Combine like terms: 8u + -8u = 0 28 + -7u = 0 Add '-28' to each side of the equation. 28 + -28 + -7u = 0 + -28 Combine like terms: 28 + -28 = 0 0 + -7u = 0 + -28 -7u = 0 + -28 Combine like terms: 0 + -28 = -28 -7u = -28 Divide each side by '-7'. u = 4 Simplifying u = 4
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