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Simplifying -7u + 20 = -2(u + 5) Reorder the terms: 20 + -7u = -2(u + 5) Reorder the terms: 20 + -7u = -2(5 + u) 20 + -7u = (5 * -2 + u * -2) 20 + -7u = (-10 + -2u) Solving 20 + -7u = -10 + -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. 20 + -7u + 2u = -10 + -2u + 2u Combine like terms: -7u + 2u = -5u 20 + -5u = -10 + -2u + 2u Combine like terms: -2u + 2u = 0 20 + -5u = -10 + 0 20 + -5u = -10 Add '-20' to each side of the equation. 20 + -20 + -5u = -10 + -20 Combine like terms: 20 + -20 = 0 0 + -5u = -10 + -20 -5u = -10 + -20 Combine like terms: -10 + -20 = -30 -5u = -30 Divide each side by '-5'. u = 6 Simplifying u = 6
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