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Simplifying 23 + 18u = 21 + 14u Solving 23 + 18u = 21 + 14u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-14u' to each side of the equation. 23 + 18u + -14u = 21 + 14u + -14u Combine like terms: 18u + -14u = 4u 23 + 4u = 21 + 14u + -14u Combine like terms: 14u + -14u = 0 23 + 4u = 21 + 0 23 + 4u = 21 Add '-23' to each side of the equation. 23 + -23 + 4u = 21 + -23 Combine like terms: 23 + -23 = 0 0 + 4u = 21 + -23 4u = 21 + -23 Combine like terms: 21 + -23 = -2 4u = -2 Divide each side by '4'. u = -0.5 Simplifying u = -0.5
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