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Simplifying 2L + 2(L + -5) = 80 Reorder the terms: 2L + 2(-5 + L) = 80 2L + (-5 * 2 + L * 2) = 80 2L + (-10 + 2L) = 80 Reorder the terms: -10 + 2L + 2L = 80 Combine like terms: 2L + 2L = 4L -10 + 4L = 80 Solving -10 + 4L = 80 Solving for variable 'L'. Move all terms containing L to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + 4L = 80 + 10 Combine like terms: -10 + 10 = 0 0 + 4L = 80 + 10 4L = 80 + 10 Combine like terms: 80 + 10 = 90 4L = 90 Divide each side by '4'. L = 22.5 Simplifying L = 22.5
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