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Simplifying 3u + -1(-20) = -2 Multiply -1 * -20 3u + 20 = -2 Reorder the terms: 20 + 3u = -2 Solving 20 + 3u = -2 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 3u = -2 + -20 Combine like terms: 20 + -20 = 0 0 + 3u = -2 + -20 3u = -2 + -20 Combine like terms: -2 + -20 = -22 3u = -22 Divide each side by '3'. u = -7.333333333 Simplifying u = -7.333333333
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