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Simplifying 7 = 2u + -15 Reorder the terms: 7 = -15 + 2u Solving 7 = -15 + 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 = -15 + 2u + -2u Combine like terms: 2u + -2u = 0 7 + -2u = -15 + 0 7 + -2u = -15 Add '-7' to each side of the equation. 7 + -7 + -2u = -15 + -7 Combine like terms: 7 + -7 = 0 0 + -2u = -15 + -7 -2u = -15 + -7 Combine like terms: -15 + -7 = -22 -2u = -22 Divide each side by '-2'. u = 11 Simplifying u = 11
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