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Simplifying 4.2 = 0.75 + u Solving 4.2 = 0.75 + u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-1u' to each side of the equation. 4.2 + -1u = 0.75 + u + -1u Combine like terms: u + -1u = 0 4.2 + -1u = 0.75 + 0 4.2 + -1u = 0.75 Add '-4.2' to each side of the equation. 4.2 + -4.2 + -1u = 0.75 + -4.2 Combine like terms: 4.2 + -4.2 = 0.0 0.0 + -1u = 0.75 + -4.2 -1u = 0.75 + -4.2 Combine like terms: 0.75 + -4.2 = -3.45 -1u = -3.45 Divide each side by '-1'. u = 3.45 Simplifying u = 3.45
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