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Simplifying ln(7x) + ln(5x) = 7 Remove parenthesis around (7x) ln * 7x + ln(5x) = 7 Reorder the terms for easier multiplication: 7ln * x + ln(5x) = 7 Multiply ln * x 7lnx + ln(5x) = 7 Remove parenthesis around (5x) 7lnx + ln * 5x = 7 Reorder the terms for easier multiplication: 7lnx + 5ln * x = 7 Multiply ln * x 7lnx + 5lnx = 7 Combine like terms: 7lnx + 5lnx = 12lnx 12lnx = 7 Solving 12lnx = 7 Solving for variable 'l'. Move all terms containing l to the left, all other terms to the right. Divide each side by '12nx'. l = 0.5833333333n-1x-1 Simplifying l = 0.5833333333n-1x-1
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