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Simplifying 12u + 19u + 87 = 180 Reorder the terms: 87 + 12u + 19u = 180 Combine like terms: 12u + 19u = 31u 87 + 31u = 180 Solving 87 + 31u = 180 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-87' to each side of the equation. 87 + -87 + 31u = 180 + -87 Combine like terms: 87 + -87 = 0 0 + 31u = 180 + -87 31u = 180 + -87 Combine like terms: 180 + -87 = 93 31u = 93 Divide each side by '31'. u = 3 Simplifying u = 3
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