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Simplifying 43 = 4u + -13 Reorder the terms: 43 = -13 + 4u Solving 43 = -13 + 4u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-4u' to each side of the equation. 43 + -4u = -13 + 4u + -4u Combine like terms: 4u + -4u = 0 43 + -4u = -13 + 0 43 + -4u = -13 Add '-43' to each side of the equation. 43 + -43 + -4u = -13 + -43 Combine like terms: 43 + -43 = 0 0 + -4u = -13 + -43 -4u = -13 + -43 Combine like terms: -13 + -43 = -56 -4u = -56 Divide each side by '-4'. u = 14 Simplifying u = 14
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