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Simplifying -7 = -3 + 2u Solving -7 = -3 + 2u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-2u' to each side of the equation. -7 + -2u = -3 + 2u + -2u Combine like terms: 2u + -2u = 0 -7 + -2u = -3 + 0 -7 + -2u = -3 Add '7' to each side of the equation. -7 + 7 + -2u = -3 + 7 Combine like terms: -7 + 7 = 0 0 + -2u = -3 + 7 -2u = -3 + 7 Combine like terms: -3 + 7 = 4 -2u = 4 Divide each side by '-2'. u = -2 Simplifying u = -2
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