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Simplifying -13 = -4u + -7 Reorder the terms: -13 = -7 + -4u Solving -13 = -7 + -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. -13 + 4u = -7 + -4u + 4u Combine like terms: -4u + 4u = 0 -13 + 4u = -7 + 0 -13 + 4u = -7 Add '13' to each side of the equation. -13 + 13 + 4u = -7 + 13 Combine like terms: -13 + 13 = 0 0 + 4u = -7 + 13 4u = -7 + 13 Combine like terms: -7 + 13 = 6 4u = 6 Divide each side by '4'. u = 1.5 Simplifying u = 1.5
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