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Simplifying 72 = 4u + -8 Reorder the terms: 72 = -8 + 4u Solving 72 = -8 + 4u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-4u' to each side of the equation. 72 + -4u = -8 + 4u + -4u Combine like terms: 4u + -4u = 0 72 + -4u = -8 + 0 72 + -4u = -8 Add '-72' to each side of the equation. 72 + -72 + -4u = -8 + -72 Combine like terms: 72 + -72 = 0 0 + -4u = -8 + -72 -4u = -8 + -72 Combine like terms: -8 + -72 = -80 -4u = -80 Divide each side by '-4'. u = 20 Simplifying u = 20
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