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Simplifying 7 + -3u = -4u Solving 7 + -3u = -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. 7 + -3u + 4u = -4u + 4u Combine like terms: -3u + 4u = 1u 7 + 1u = -4u + 4u Combine like terms: -4u + 4u = 0 7 + 1u = 0 Add '-7' to each side of the equation. 7 + -7 + 1u = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 1u = 0 + -7 1u = 0 + -7 Combine like terms: 0 + -7 = -7 1u = -7 Divide each side by '1'. u = -7 Simplifying u = -7
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