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Simplifying -7 = -8 + u Solving -7 = -8 + 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. -7 + -1u = -8 + u + -1u Combine like terms: u + -1u = 0 -7 + -1u = -8 + 0 -7 + -1u = -8 Add '7' to each side of the equation. -7 + 7 + -1u = -8 + 7 Combine like terms: -7 + 7 = 0 0 + -1u = -8 + 7 -1u = -8 + 7 Combine like terms: -8 + 7 = -1 -1u = -1 Divide each side by '-1'. u = 1 Simplifying u = 1
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