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Simplifying -7 + 8u = 7u Solving -7 + 8u = 7u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-7u' to each side of the equation. -7 + 8u + -7u = 7u + -7u Combine like terms: 8u + -7u = 1u -7 + 1u = 7u + -7u Combine like terms: 7u + -7u = 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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